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Brand | apple | apple | apple |
Model | apple Watch edition 38mm (1st gen) | apple Watch series 2 aluminum 38mm | apple Watch series 4 |
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Announced | 2014 September | 2016 September. Released 2016 December | 2018 September |
Status | Available. Released 2015 July | discontinued | Available. Released 2018 September |
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Device Body | | glass front | ceramic back | aluminum frame | glass front ( sapphire crystal ) | ceramic/sapphire crystal back | stainless steel frame |
Dimensions | 38.6 x 33.3 x 10.5 mm ( 1.52 x 1.31 x 0.41 in ) | 38.6 x 33.3 x 11.4 mm ( 1.52 x 1.31 x 0.45 in ) | 44 x 38 x 10.7 mm ( 1.73 x 1.50 x 0.42 in ) |
Weight in gram | 55 | 28.2 | 48 |
SIM card | No | No | eSIM |
Water Resistance | | 50meterwater resistant | 50meterwater resistant |
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Display type | OLED capacitive touchscreen | 16millioncolors | Retina OLED | 1000 Luminance units ( the peak ) | Retina LTPO OLED | 1000 Luminance units ( the peak ) |
Display resolution | 340 x 272 pixels ( ~290 pixel per inch density ) | 340 x 272 pixels ( ~290 pixel per inch density ) | 448 x 368 pixels ( ~326 pixel per inch density ) |
Display size | 1.5 inches | 7.1 cm2 ( ~55.1% screen to body ratio ) | 1.5 inches | 1.78 inches |
Display Protection | | ion-x strengthened glass | sapphire crystal glass |
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Operating System | watchos 1.0 | upgradable to 4.3.2 | watchos 3.0 | upgradable to 6.2.8 | watchos 5.0 | upgradable to 9.6.1 |
CPU | 520 mhz cortex-a7 | Dual-core 780 mhz cortex-a7 | Dual-core |
Chipset | apple s1 ( 28 nm ) | apple s2 ( 16 nm ) | apple s4 |
GPU | powervr sgx543 | powervr g6200 | powervr |
Memory card | No | No | No |
Memory v1 | 8gb 512mb RAM | 8gb 512mb RAM | 16gb 1gb RAM |
Memory v2 | | | |
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Primary camera |
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Secondary camera |
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Loud speaker | Yes | Yes | Yes |
Audio jack | No | No | No |
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WLAN | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n |
Bluetooth | 4.0 | le | 4.0 | a2dp | 5.0 | a2dp | le |
GPS | No | Yes with glonass | |
NFC | Yes | Yes | Yes |
Radio | No | No | No |
USB | No | No | No |
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Sensors | accelerometer | gyroscope | heart rate | accelerometer | gyroscope | heart rate | accelerometer | gyroscope | heart rate | barometer |
Battery | Non-removable Li-lon 205 mAh battery ( 0.78watt per hour ) | Li-lon 273 mAh | Non-removable ( 1.03watt per hour ) | Li-lon 292 mAh ( 1.12watt per hour ) | Non-removable |
Battery Charge | | wireless charging | wireless |
Colors | white color gradations, gray color gradations | silver color gradations, gold, gold color gradations, gray | black color gradations, silver, gold |
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Network technology | No cellular connectivity | No cellular connectivity | gsm / hspa / lte |
5G bands | | | |
Network speed | | | hspa lte |
GPRS | No | No | |
EDGE | No | No | |
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Approx price |  110 GBP 149 EUR 1310 NOK 1400 SEK 8500 RUB 140 USD 710 BRL 200 AUD 180000 KRW 18000 JPY 190 SGD 600 MYR 500 AED 2300 ZAR
| - 360 GBP
- 428 EUR
- 4150 NOK
- 4400 SEK
- 26800 RUB
- 430 USD
- 2260 BRL
- 620 AUD
- 560000 KRW
- 58000 JPY
- 590 SGD
- 1910 MYR
- 1570 AED
- 7200 ZAR
| - 590 GBP
- 708 EUR
- 6920 NOK
- 7300 SEK
- 44600 RUB
- 720 USD
- 3760 BRL
- 1030 AUD
- 940000 KRW
- 96000 JPY
- 990 SGD
- 3170 MYR
- 2620 AED
- 12000 ZAR
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