Apple Watch Series 4 40MM Specs
| LAUNCH | |
| Announced | September, 2018 |
| Status | Available |
| NETWORK | |
| 2G | GSM 850 / 900 / 1800 / 1900 |
| 3G | HSDPA 850 / 900 / 2100 / 800 |
| 4G | LTE band 1(2100), 3(1800), 39(1900), 40(2300), 41(2500) |
| DESIGN | |
| Dimensions | 44 x 38 x 10.7mm |
| Material | Stainless steel frame, All-ceramic/sapphire crystal back |
| Weight | 48 g |
| SIM | eSIM |
| Protection | 50m water resistant ECG certified |
| DISPLAY | |
| Technology | LTPO OLED capacitive touchscreen |
| Size | 1.78 inches, (60.0% screen-to-body ratio) |
| Screen resolution | 448 pixels x 368 pixels, (326 PPI), 1:1 ratio |
| Display protection | Sapphire Crystal Glass |
| Other display features | 3D Touch display 1000 nits max brightness |
| STORAGE | |
| RAM | - |
| Internal | 16 GB |
| Card Slot | No |
| PLATFORM | |
| Operating System | watchOS v5.0, upgradable to v6.1.1 |
| Chipset | Apple S4 |
| Processor | Dual Core |
| GPU | PowerVR |
| Front Camera | No |
| Rear Camera | No |
| WLAN | Wi-Fi 802.11 b/g/n |
| GPS | A-GPS, GLONASS, GALILEO, QZSS |
| Bluetooth | v5.0, A2DP, LE |
| NFC | Yes |
| USB | No |
| Radio | No |
| SOUND | |
| Loudspeaker | Yes |
| 3.5mm headphone jack | No |
| More features | - |
| BATTERY | |
| Type | Li-Ion, Non-removable |
| Capacity | - mAh |
| Charging | Wireless charging |
| MISCELLANEOUS | |
| Sensors | Accelerometer Gyro Heart rate Barometer Compass |
| Available colors | Silver, Space Black, Gold |
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