Notebookcheck

Breve análise do Tablet Lenovo IdeaPad Duet Chromebook 10

Híbrido tablet Chrome. Como um Chromebook conversível, o Duet quer substituir portáteis e tablets no segmento de nível de entrada econômico. A análise a seguir revelará as limitações que os usuários têm de suportar.
Klaus Hinum, 👁 Klaus Hinum, Katja Steyrleuthner (traduzido por Ricardo Soto),
Lenovo IdeaPad Duet Chromebook 10
Processador
Mediatek Helio P60T 8 x 2 GHz, Cortex-A73 / A53
Placa gráfica
ARM Mali-G72 MP3
Memória
4096 MB 
, LPDDR4X
Pantalha
10.1 polegadas 16:10, 1920 x 1200 pixel 224 PPI, capacitiva, IPS, Brilhante: sim, detachable screen, 60 Hz
Disco rígido
64 GB eMMC Flash, 64 GB 
, 64 GB/128 GB
Conexões
1 USB 3.0, Sensores: Sensor de luz ambiente, G-sensor, giroscópio, USB-C com suporte para DisplayPort e Power Delivery, adaptador para USB-C para fones
Funcionamento em rede
802.11 a/b/g/n/ac (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5), Bluetooth 4.2
Tamanho
altura x largura x profundidade (em mm): 18.2 x 244.87 x 169.31
Bateria
27.6 Wh, 7180 mAh Lítio-Polímero, Duração da bateria (de acordo com o fabricante): 10 h
Sistema Operativo
Google Chrome OS
Camera
Primary Camera: 8 MPix
Secondary Camera: 2 MPix
Características adicionais
Alto falantes: Estéreo, Teclado: chiclet, fanless
peso
920 g
Preço
300 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Rating
Date
Model
Weight
Height
Size
Resolution
Best Price
80 %
09/2020
Lenovo IdeaPad Duet Chromebook 10
Helio P60T, Mali-G72 MP3
920 g18.2 mm10.1"1920x1200
83 %
10/2018
Microsoft Surface Go MHN-00003
Pentium 4415Y, UHD Graphics 615
523 g8.3 mm10"1800x1200
85 %
10/2019
Apple iPad 7 2019
A10 Fusion, A10 Fusion GPU
483 g7.5 mm10.2"2160x1620
69 %
Chuwi Hi10 X
Celeron N4100, UHD Graphics 600
600 g8.8 mm10.1"1920x1200
83 %
06/2020
Samsung Galaxy Tab S6 Lite
Exynos 9611, Mali-G72 MP3
467 g7 mm10.4"2000x1200
88 %
08/2020
Huawei MatePad Pro 10.8
Kirin 990, Mali-G76 MP16
460 g7.2 mm10.8"2560x1600
79 %
12/2019
Amazon Fire HD 10 2019
MT8183, Mali-G72 MP3
504 g9.8 mm10.1"1920x1200
87 %
10/2019
Samsung Galaxy Tab S6 SM-T860
SD 855, Adreno 640
420 g5.7 mm10.5"2560x1600

Size comparison

244.87 mm 169.31 mm 18.2 mm 920 g250.6 mm 174.1 mm 7.5 mm 483 g247.6 mm 178.5 mm 5.9 mm 471 g245 mm 175 mm 8.3 mm 523 g
Networking
iperf3 Client (receive) TCP 1 m 4M x10
Dell Inspiron 7486 Chromebook 14 2-in-1
UHD Graphics 620, i3-8130U, 128 GB eMMC Flash
673 MBit/s ∼100% +122%
Lenovo Yoga Chromebook C630-81JX0008UX
UHD Graphics 620, i5-8250U, 128 GB eMMC Flash
637 MBit/s ∼95% +110%
Microsoft Surface Go MHN-00003
UHD Graphics 615, Pentium 4415Y, 64 GB eMMC Flash
581 MBit/s ∼86% +92%
Average of class Convertible
  (28.7 - 1470, n=177)
551 MBit/s ∼82% +82%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
321 (302min - 327max) MBit/s ∼48% +6%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
303 (259min - 339max) MBit/s ∼45%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
225 (43min - 264max) MBit/s ∼33% -26%
iperf3 Client (transmit) TCP 1 m 4M x10
Average of class Convertible
  (36.4 - 1411, n=177)
547 MBit/s ∼100% +78%
Lenovo Yoga Chromebook C630-81JX0008UX
UHD Graphics 620, i5-8250U, 128 GB eMMC Flash
523 MBit/s ∼96% +70%
Dell Inspiron 7486 Chromebook 14 2-in-1
UHD Graphics 620, i3-8130U, 128 GB eMMC Flash
491 MBit/s ∼90% +60%
Microsoft Surface Go MHN-00003
UHD Graphics 615, Pentium 4415Y, 64 GB eMMC Flash
476 MBit/s ∼87% +55%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
307 (295min - 320max) MBit/s ∼56%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
299 (279min - 310max) MBit/s ∼55% -3%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
229 (160min - 286max) MBit/s ∼42% -25%
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340Tooltip
; iperf3 Client (receive) TCP 1 m 4M x10; iperf 3.6: Ø303 (259-339)
; iperf3 Client (transmit) TCP 1 m 4M x10; iperf 3.6: Ø307 (295-320)

Image Comparison

Choose a scene and navigate within the first image. One click changes the position on touchscreens. One click on the zoomed-in image opens the original in a new window. The first image shows the scaled photograph of the test device.

ColorChecker
14.5 ∆E
15 ∆E
18.9 ∆E
15.4 ∆E
18.9 ∆E
11.6 ∆E
12.1 ∆E
19.8 ∆E
16 ∆E
12 ∆E
9.6 ∆E
6.9 ∆E
14.1 ∆E
11.1 ∆E
17.1 ∆E
5.4 ∆E
13.5 ∆E
10.5 ∆E
2.3 ∆E
8.5 ∆E
11.9 ∆E
6.8 ∆E
4.5 ∆E
5.9 ∆E
ColorChecker Lenovo IdeaPad Duet Chromebook 10: 11.76 ∆E min: 2.33 - max: 19.76 ∆E
327
cd/m²
362
cd/m²
386
cd/m²
336
cd/m²
397
cd/m²
371
cd/m²
323
cd/m²
370
cd/m²
366
cd/m²
Distribuição do brilho
X-Rite i1Pro 2
Máximo: 397 cd/m² Médio: 359.8 cd/m² Minimum: 4 cd/m²
iluminação: 81 %
iluminação com acumulador: 397 cd/m²
Contraste: 902:1 (Preto: 0.44 cd/m²)
ΔE Color 3.19 | 0.6-29.43 Ø5.8
ΔE Greyscale 5.9 | 0.64-98 Ø6
Lenovo IdeaPad Duet Chromebook 10
IPS, 1920x1200, 10.1
Lenovo Yoga Chromebook C630-81JX0008UX
IPS, 3840x2160, 15.6
Dell Inspiron 7486 Chromebook 14 2-in-1
IPS, 1920x1080, 14
Microsoft Surface Go MHN-00003
IPS, 1800x1200, 10
Apple iPad 7 2019
IPS, 2160x1620, 10.2
Amazon Fire HD 10 2019
IPS, 1920x1200, 10.1
Screen
13%
27%
43%
38%
9%
Brightness middle
397
281.2
-29%
348.1
-12%
456
15%
499
26%
449
13%
Brightness
360
262
-27%
321
-11%
426
18%
470
31%
425
18%
Brightness Distribution
81
76
-6%
85
5%
88
9%
87
7%
89
10%
Black Level *
0.44
0.24
45%
0.28
36%
0.31
30%
0.49
-11%
0.6
-36%
Contrast
902
1172
30%
1243
38%
1471
63%
1018
13%
748
-17%
Colorchecker DeltaE2000 *
3.19
3.63
-14%
1.75
45%
1.3
59%
0.97
70%
3.1
3%
Colorchecker DeltaE2000 max. *
11
4.5
59%
4.74
57%
3
73%
1.98
82%
6.4
42%
Greyscale DeltaE2000 *
5.9
3.3
44%
2.6
56%
1.4
76%
0.9
85%
3.8
36%
CCT
7938 82%
6299 103%
6441 101%
6687 97%
6571 99%
7202 90%
Gamma
2.349 94%
2.206 100%
2.24 98%
2.135 103%
2.09 105%
Colorchecker DeltaE2000 calibrated *
1.1
Color Space (Percent of AdobeRGB 1998)
62.3
Color Space (Percent of sRGB)
96.8

* ... smaller is better

Screen Flickering / PWM (Pulse-Width Modulation)

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM not detected

In comparison: 51 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 17699 (minimum: 5 - maximum: 2500000) Hz was measured.

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.
       Response Time Black to White
27.5 ms ... rise ↗ and fall ↘ combined↗ 14.3 ms rise
↘ 13.2 ms fall
The screen shows relatively slow response rates in our tests and may be too slow for gamers.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 59 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (24.4 ms).
       Response Time 50% Grey to 80% Grey
40.1 ms ... rise ↗ and fall ↘ combined↗ 20.3 ms rise
↘ 19.8 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.8 (minimum) to 636 (maximum) ms. » 49 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (38.8 ms).
Geekbench 5.1 / 5.2
64 Bit Multi-Core Score
Average of class Convertible
  (770 - 5443, n=28)
3420 Points ∼28% +269%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
1426 Points ∼12% +54%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
1207 Points ∼10% +30%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
926 Points ∼7%
64 Bit Single-Core Score
Average of class Convertible
  (233 - 1334, n=28)
991 Points ∼61% +277%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
777 Points ∼48% +195%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
345 Points ∼21% +31%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
263 Points ∼16%
PCMark for Android - Work performance score
Average of class Convertible
  (4504 - 19602, n=6)
9801 Points ∼49% +11%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
8851 Points ∼44%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
6284 Points ∼31% -29%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
6144 Points ∼31% -31%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
4671 Points ∼23% -47%
3DMark
2560x1440 Sling Shot Extreme (Vulkan) Unlimited Physics
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
2567 Points ∼63%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
2076 Points ∼51%
2560x1440 Sling Shot Extreme (Vulkan) Unlimited Graphics
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
1437 Points ∼16%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
955 Points ∼11%
2560x1440 Sling Shot Extreme (Vulkan) Unlimited
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
1543 Points ∼23%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
1110 Points ∼16%
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited Physics
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
2966 Points ∼37%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
2280 Points ∼29%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
1524 Points ∼19%
Average of class Convertible
  (1126 - 1520, n=2)
1323 Points ∼17%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1126 Points ∼14%
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited Graphics
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
3800 Points ∼40%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
1528 Points ∼16%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1058 Points ∼11%
Average of class Convertible
  (977 - 1058, n=2)
1018 Points ∼11%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
986 Points ∼10%
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
2854 Points ∼35%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
1649 Points ∼20%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
1158 Points ∼14%
Average of class Convertible
  (1072 - 1180, n=2)
1126 Points ∼14%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1072 Points ∼13%
2560x1440 Sling Shot OpenGL ES 3.0 Unlimited Physics
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
2963 Points ∼51%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
2283 Points ∼40%
Average of class Convertible
  (1151 - 1696, n=3)
1496 Points ∼26%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
1480 Points ∼26%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1151 Points ∼20%
2560x1440 Sling Shot OpenGL ES 3.0 Unlimited Graphics
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
6712 Points ∼23%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
2021 Points ∼7%
Average of class Convertible
  (1452 - 2640, n=3)
1897 Points ∼7%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1598 Points ∼6%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
1455 Points ∼5%
2560x1440 Sling Shot OpenGL ES 3.0 Unlimited
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
3759 Points ∼28%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
2074 Points ∼15%
Average of class Convertible
  (1445 - 2349, n=3)
1765 Points ∼13%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
1641 Points ∼12%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1445 Points ∼11%
2560x1440 Sling Shot Extreme (ES 3.1) Physics
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
2832 Points ∼54% +10%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
2586 Points ∼50%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
2178 Points ∼42% -16%
Average of class Convertible
  (1130 - 2586, n=4)
1642 Points ∼32% -37%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
1509 Points ∼29% -42%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1130 Points ∼22% -56%
2560x1440 Sling Shot Extreme (ES 3.1) Graphics
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
3318 Points ∼39% +251%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
1472 Points ∼17% +56%
Average of class Convertible
  (944 - 2049, n=4)
1254 Points ∼15% +33%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1054 Points ∼12% +12%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
990 Points ∼12% +5%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
944 Points ∼11%
2560x1440 Sling Shot Extreme (ES 3.1)
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
2621 Points ∼13% +138%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
1586 Points ∼8% +44%
Average of class Convertible
  (1050 - 1838, n=4)
1264 Points ∼6% +15%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
1157 Points ∼6% +5%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
1099 Points ∼5%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1070 Points ∼5% -3%
2560x1440 Sling Shot OpenGL ES 3.0 Physics
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
2818 Points ∼53% +9%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
2595 Points ∼49%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
2199 Points ∼42% -15%
Average of class Convertible
  (1119 - 2595, n=6)
1789 Points ∼34% -31%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
1490 Points ∼28% -43%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1119 Points ∼21% -57%
2560x1440 Sling Shot OpenGL ES 3.0 Graphics
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
5537 Points ∼44% +344%
Average of class Convertible
  (1246 - 4380, n=6)
2388 Points ∼19% +92%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
2048 Points ∼16% +64%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1530 Points ∼12% +23%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
1434 Points ∼11% +15%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
1246 Points ∼10%
2560x1440 Sling Shot OpenGL ES 3.0
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
3453 Points ∼36% +145%
Average of class Convertible
  (1409 - 3735, n=6)
2119 Points ∼22% +50%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
2088 Points ∼22% +48%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
1610 Points ∼17% +14%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
1415 Points ∼15% 0%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
1409 Points ∼15%
1280x720 offscreen Ice Storm Unlimited Physics
Average of class Convertible
  (6042 - 68588, n=113)
38324 Points ∼44%
Microsoft Surface Go MHN-00003
UHD Graphics 615, Pentium 4415Y, 64 GB eMMC Flash
20366 Points ∼24%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
19797 Points ∼23%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
18829 Points ∼22%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
15479 Points ∼18%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
15195 Points ∼18%
1280x720 offscreen Ice Storm Unlimited Graphics Score
Average of class Convertible
  (13779 - 322268, n=113)
90432 Points ∼17%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
65558 Points ∼12%
Microsoft Surface Go MHN-00003
UHD Graphics 615, Pentium 4415Y, 64 GB eMMC Flash
57024 Points ∼10%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
25625 Points ∼5%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
19615 Points ∼4%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
18563 Points ∼3%
1280x720 offscreen Ice Storm Unlimited Score
Average of class Convertible
  (11467 - 173751, n=113)
66336 Points ∼27%
Microsoft Surface Go MHN-00003
UHD Graphics 615, Pentium 4415Y, 64 GB eMMC Flash
40731 Points ∼17%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
38138 Points ∼16%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
24052 Points ∼10%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
19435 Points ∼8%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
17549 Points ∼7%
GFXBench (DX / GLBenchmark) 2.7
1920x1080 T-Rex HD Offscreen C24Z16
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
123.7 fps ∼1% +234%
Average of class Convertible
  (2.8 - 502, n=37)
88.8 fps ∼1% +140%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
48 fps ∼0% +30%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
38 fps ∼0% +3%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
37 fps ∼0%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
27 fps ∼0% -27%
T-Rex HD Onscreen C24Z16
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
59.5 fps ∼2% +80%
Average of class Convertible
  (16 - 243, n=32)
57.5 fps ∼2% +74%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
44 fps ∼1% +33%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
37 fps ∼1% +12%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
33 fps ∼1%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
23 fps ∼1% -30%
GFXBench 3.0
off screen Manhattan Offscreen OGL
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
60.4 fps ∼10% +202%
Average of class Convertible
  (12 - 223, n=21)
53.3 fps ∼9% +167%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
26 fps ∼4% +30%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
20 fps ∼3% 0%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
20 fps ∼3%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
12 fps ∼2% -40%
on screen Manhattan Onscreen OGL
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
41.1 fps ∼11% +116%
Average of class Convertible
  (11 - 130, n=20)
38.9 fps ∼11% +105%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
24 fps ∼7% +26%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
21 fps ∼6% +11%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
19 fps ∼5%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
11 fps ∼3% -42%
GFXBench 3.1
off screen Manhattan ES 3.1 Offscreen
Average of class Convertible
  (7.2 - 165, n=19)
43.2 fps ∼1% +260%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
39.3 fps ∼1% +228%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
16 fps ∼0% +33%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
12 fps ∼0% 0%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
12 fps ∼0%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
9.4 fps ∼0% -22%
on screen Manhattan ES 3.1 Onscreen
Average of class Convertible
  (7 - 77.4, n=19)
29.1 fps ∼1% +165%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
25 fps ∼1% +127%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
14 fps ∼0% +27%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
12 fps ∼0% +9%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
11 fps ∼0%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
8.5 fps ∼0% -23%
GFXBench
Aztec Ruins High Tier Onscreen
Average of class Convertible
  (4.5 - 39.1, n=9)
20.8 fps ∼13% +362%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
12.3 fps ∼8% +173%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
5.8 fps ∼4% +29%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
4.5 fps ∼3%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
4.3 fps ∼3% -4%
2560x1440 Aztec Ruins High Tier Offscreen
Average of class Convertible
  (2.7 - 63.8, n=9)
20.6 fps ∼9% +663%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
10.8 fps ∼4% +300%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
3.6 fps ∼1% +33%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
2.7 fps ∼1%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
2.6 fps ∼1% -4%
Aztec Ruins Normal Tier Onscreen
Average of class Convertible
  (7.4 - 57.1, n=9)
31.3 fps ∼15% +323%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
20 fps ∼10% +170%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
9.7 fps ∼5% +31%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
7.4 fps ∼4% 0%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
7.4 fps ∼4%
1920x1080 Aztec Ruins Normal Tier Offscreen
Average of class Convertible
  (7.9 - 158, n=9)
53.5 fps ∼9% +577%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
29.1 fps ∼5% +268%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
10 fps ∼2% +27%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
7.9 fps ∼1%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
7.6 fps ∼1% -4%
off screen Car Chase Offscreen
Average of class Convertible
  (6.3 - 110, n=15)
36.7 fps ∼8% +403%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
25.1 fps ∼6% +244%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
10 fps ∼2% +37%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
7.4 fps ∼2% +1%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
7.3 fps ∼2%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
6.3 fps ∼1% -14%
on screen Car Chase Onscreen
Average of class Convertible
  (5.9 - 55.9, n=13)
24.8 fps ∼9% +254%
Apple iPad 7 2019
A10 Fusion GPU, A10 Fusion, 128 GB NVMe
17.7 fps ∼7% +153%
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
9.6 fps ∼4% +37%
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
7.4 fps ∼3% +6%
Lenovo IdeaPad Duet Chromebook 10
Mali-G72 MP3, Helio P60T, 64 GB eMMC Flash
7 fps ∼3%
Teclast Tbook 10s
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
5.9 fps ∼2% -16%
AnTuTu v8 - Total Score
Samsung Galaxy Tab S6 Lite
Mali-G72 MP3, Exynos 9611, 64 GB UFS 2.0 Flash
177197 Points ∼24%
Basemark GPU 1.1
1920x1080 OpenGL Medium Offscreen
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
10.72 fps ∼11%
Vulkan Medium Native
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
fps ∼0%
1920x1080 Vulkan Medium Offscreen
Amazon Fire HD 10 2019
Mali-G72 MP3, MT8183, 32 GB eMMC Flash
fps ∼0%
Jetstream 2 - Total Score
Average of class Convertible (32.2 - 139, n=5)
89.4 Points ∼100% +177%
Apple iPad 7 2019 (Safari 13)
76.172 Points ∼85% +136%
Lenovo IdeaPad Duet Chromebook 10
32.22 Points ∼36%
Samsung Galaxy Tab S6 Lite (Chrome 80.0.3987.99)
27.459 Points ∼31% -15%
Amazon Fire HD 10 2019 (Silk Browser 75.3.60)
25.621 Points ∼29% -20%
WebXPRT 3 - ---
Average of class Convertible (48.1 - 218, n=30)
158 Points ∼100% +168%
Apple iPad 7 2019 (Safari 13)
111 Points ∼70% +88%
Lenovo IdeaPad Duet Chromebook 10
59 Points ∼37%
Samsung Galaxy Tab S6 Lite (Chrome 80.0.3987.99)
54 Points ∼34% -8%
Amazon Fire HD 10 2019 (Silk Browser 75.3.60)
52 Points ∼33% -12%
Speedometer 2.0 - Result
Apple iPad 7 2019 (Safari 13)
66.4 runs/min ∼100% +140%
Average of class Convertible (27.7 - 101, n=10)
51.6 runs/min ∼78% +86%
Samsung Galaxy Tab S6 Lite (Chrome 80.0.3987.99)
29.2 runs/min ∼44% +5%
Amazon Fire HD 10 2019 (Silk Browser 75.3.60)
27.7 runs/min ∼42% 0%
Lenovo IdeaPad Duet Chromebook 10
27.68 runs/min ∼42%
Octane V2 - Total Score
Lenovo Yoga Chromebook C630-81JX0008UX (Version 72.0.3626.119)
35674 Points ∼100% +269%
Dell Inspiron 7486 Chromebook 14 2-in-1 (Chrome 71.0.3578.127)
31980 Points ∼90% +231%
Apple iPad 7 2019 (Safari 13)
27900 Points ∼78% +189%
Average of class Convertible (3067 - 48558, n=206)
23183 Points ∼65% +140%
Microsoft Surface Go MHN-00003 (Edge 42.17134.1.0)
11875 Points ∼33% +23%
Lenovo IdeaPad Duet Chromebook 10
9656 Points ∼27%
Samsung Galaxy Tab S6 Lite (Chrome 80.0.3987.99)
9415 Points ∼26% -2%
Amazon Fire HD 10 2019 (Silk Browser 75.3.60)
8665 Points ∼24% -10%
Teclast Tbook 10s (Chrome Version 56)
6494 Points ∼18% -33%
Mozilla Kraken 1.1 - Total Score
Teclast Tbook 10s (Chrome Version 56)
5047.4 ms * ∼100% -33%
Amazon Fire HD 10 2019 (Silk Browser 75.3.60)
4979.3 ms * ∼99% -31%
Samsung Galaxy Tab S6 Lite (Chrome 80.0.3987.99)
4871.7 ms * ∼97% -28%
Lenovo IdeaPad Duet Chromebook 10
3809 ms * ∼75%
Microsoft Surface Go MHN-00003 (Edge 42.17134.1.0)
3077.3 ms * ∼61% +19%
Average of class Convertible (791 - 9177, n=230)
2278 ms * ∼45% +40%
Apple iPad 7 2019 (Safari 13)
1115.9 ms * ∼22% +71%
Dell Inspiron 7486 Chromebook 14 2-in-1 (Chrome 71.0.3578.127)
1083.5 ms * ∼21% +72%
Lenovo Yoga Chromebook C630-81JX0008UX (Version 72.0.3626.119)
1059.5 ms * ∼21% +72%

* ... smaller is better

Lenovo IdeaPad Duet Chromebook 10Google PixelbookTeclast Tbook 10sLenovo Yoga Book Android YB1-X90FHP SlateBook x2Samsung Galaxy S20+Average 64 GB eMMC FlashAverage of class Convertible
AndroBench 3-5
3%
-44%
-6%
-77%
1040%
106%
-41%
Random Write 4KB
12.8
12.6
-2%
3.4
-73%
11.7
-9%
0.35
-97%
229.8
1695%
27.7 (3.4 - 147, n=142)
116%
5.96 (0.31 - 12.8, n=7)
-53%
Random Read 4KB
24.3
28.87
19%
11.44
-53%
23.5
-3%
7.84
-68%
199.6
721%
56.1 (11.4 - 149, n=142)
131%
16.5 (7.84 - 28.9, n=7)
-32%
Sequential Write 256KB
122.1
112.07
-8%
66.48
-46%
80.6
-34%
8.65
-93%
694.3
469%
174 (40 - 254, n=142)
43%
60.8 (8.65 - 122, n=7)
-50%
Sequential Read 256KB
116.6
120.26
3%
114.68
-2%
143.4
23%
57.57
-51%
1603.1
1275%
273 (95.6 - 704, n=142)
134%
85.5 (12.2 - 143, n=7)
-27%
Carga Máxima
 33 °C30 °C30 °C 
 31 °C29 °C29 °C 
 31 °C28 °C28 °C 
Máximo: 33 °C
Médio: 29.9 °C
38 °C35 °C33 °C
29 °C30 °C30 °C
29 °C29 °C30 °C
Máximo: 38 °C
Médio: 31.4 °C
alimentação elétrica  36 °C | Temperatura do quarto 22 °C | Fluke t3000FC (calibrated), Fluke 62 Mini
(+) The average temperature for the upper side under maximal load is 29.9 °C / 86 F, compared to the average of 30.3 °C / 87 F for the devices in the class Convertible.
(+) The maximum temperature on the upper side is 33 °C / 91 F, compared to the average of 35.3 °C / 96 F, ranging from 21.8 to 55.7 °C for the class Convertible.
(+) The bottom heats up to a maximum of 38 °C / 100 F, compared to the average of 36.5 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 25 °C / 77 F, compared to the device average of 30.3 °C / 87 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 31 °C / 87.8 F and are therefore cool to the touch.
(-) The average temperature of the palmrest area of similar devices was 28.8 °C / 83.8 F (-2.2 °C / -4 F).
On the front, heat development is concentrated on the left edge.
On the front, heat development is concentrated on the left edge.
The hotspot on the back shows the position of the processor.
The hotspot on the back shows the position of the processor.
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2029.126.82526.629.13135.735.14031.930.85024.223.36320.320.18023.220.210026.321.512528.319.516031.119.520036.62025037.614.631542.113.840044.816.450048.311.663055.210.580055.610.1100058.710125060.910.4160061.410.3200060.510.7250059.410.9315061.911.5400063.411.750006811.8630065.71280006111.81000058.411.71250051.611.31600047.610.2SPL74.224.230.871.923.8N290.51.426.40.5median 55.6median 11.7Delta9.92.34244.129.731.131.133.832.332.629.33029.233.325.837.924.548.824.759.724.863.622.261.22261.821.864.820.670.319.56918.862.818.46418.466.118.169.718.267.517.767.117.866.417.964.117.76517.865.217.965.518.16218.158.118.156.218.257.430.578.11.445.9median 18.2median 64.11.93.1hearing rangehide median Pink NoiseLenovo IdeaPad Duet Chromebook 10Apple MacBook Air 2020 i5
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Lenovo IdeaPad Duet Chromebook 10 audio analysis

(±) | speaker loudness is average but good (74.2 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 22% lower than median
(±) | linearity of bass is average (7.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 4.7% away from median
(+) | mids are linear (5.7% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.9% higher than median
(+) | highs are linear (6.3% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (22.7% difference to median)
Compared to same class
» 62% of all tested devices in this class were better, 8% similar, 30% worse
» The best had a delta of 10%, average was 22%, worst was 53%
Compared to all devices tested
» 61% of all tested devices were better, 8% similar, 32% worse
» The best had a delta of 3%, average was 21%, worst was 65%

Apple MacBook Air 2020 i5 audio analysis

(±) | speaker loudness is average but good (78.1 dB)
Bass 100 - 315 Hz
(+) | good bass - only 4.3% away from median
(±) | linearity of bass is average (11.5% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.4% away from median
(+) | mids are linear (6.2% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2% away from median
(+) | highs are linear (3.7% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (7.7% difference to median)
Compared to same class
» 0% of all tested devices in this class were better, 1% similar, 99% worse
» The best had a delta of 8%, average was 20%, worst was 50%
Compared to all devices tested
» 1% of all tested devices were better, 0% similar, 99% worse
» The best had a delta of 3%, average was 21%, worst was 65%

Consumo de energia
desligadodarklight 0.26 / 0.32 Watt
Ociosodarkmidlight 1.4 / 4.5 / 5.1 Watt
Carga midlight 7.5 / 9 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Tempo de Execução da Bateria
NBC WiFi Websurfing Battery Test 1.3
12h 38min
Lenovo IdeaPad Duet Chromebook 10
7180 mAh
Apple iPad 7 2019
 mAh
Microsoft Surface Go MHN-00003
 mAh
Lenovo Yoga Chromebook C630-81JX0008UX
 mAh
Dell Inspiron 7486 Chromebook 14 2-in-1
 mAh
Amazon Fire HD 10 2019
6300 mAh
Teclast Tbook 10s
6000 mAh
Samsung Galaxy Tab S6 Lite
7040 mAh
Battery Runtime
WiFi v1.3
758
707
-7%
448
-41%
383
-49%
637
-16%
950
25%
228
-70%
792
4%

Pro

+ Boa duração da bateria
+ Baixas emissões e resfriamento silencioso
+ 8 anos de atualizações do Chrome OS

Contra

- A IU sofre de engasgos
- SoC lento
- Muito grosso com teclado e capa de suporte
- Monitor externo funciona apenas a 1280x720

O Lenovo IdeaPad Duet é um pequeno conversível que roda Chrome OS. Graças ao suporte de Android e Linux, existem inúmeras possibilidades de aplicação para o pequeno tablet. Mas lembre-se de que o Android e o Linux só funcionam virtualmente no dispositivo; consequentemente, você tem que viver com velocidades reduzidas.

Até mesmo o navegador Chrome nativo faz o SoC MediaTek suar, e você tem que conviver com um leve engasgo.

Mas, em troca, você obtém um navegador de desktop completo e, em combinação com o Linux, uma solução móvel interessante para desenvolvedores da web. Mas se você deseja apenas usar aplicativos Android e não precisa de um navegador para desktop, um tablet Android ou um iPad é provavelmente a melhor escolha para você.

As medidas técnicas do IdeaPad não atrapalham. A tela mostra boas características - especialmente para a faixa de preço. Os usuários provavelmente desejarão um brilho ainda maior para uso externo à luz do sol. O teclado e touchpad são adequados para o tamanho e faixa de preço - mas os digitadores frequentes deveriam recorrer a dispositivos maiores aqui. Além disso, não há nada do que reclamar em termos de duração da bateria e emissões. Como resultado, a combinação de Linux, Android, um navegador Chrome completo, bateria de longa duração e mobilidade pode ser um compromisso interessante para alguns usuários.

Lenovo IdeaPad Duet Chromebook 10 - 09/01/2020 v7
Klaus Hinum

Acabamento
84 / 98 → 86%
Teclado
72%
Mouse
89%
Conectividade
30 / 75 → 39%
Peso
76 / 20-75 → 100%
Bateria
89%
Pantalha
83%
Desempenho do jogos
11 / 78 → 14%
Desempenho da aplicação
53 / 85 → 63%
Temperatura
94%
Ruído
100%
Audio
63 / 91 → 70%
Camera
35 / 85 → 41%
Médio
68%
80%
Convertible - Médio equilibrado

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> Análises e revisões de portáteis e celulares > Análises > Análises > Breve análise do Tablet Lenovo IdeaPad Duet Chromebook 10
Klaus Hinum, 2020-09-13 (Update: 2020-09-13)