| Apple Watch Edition Series 2 38mm | Apple Watch Series 4 40mm Cellular | |
|---|---|---|
|  |  | |
| Device Type | Apple Smartwatch | Apple Smartwatch | 
| Launch Date | December 2016 | September 2018 | 
| Display | Size: 1.5 inches 340 x 272 pixels Protection: Sapphire crystal glass Misc:340 x 272 pixels 3D Touch display | Size: 1.57 inches 394 x 324 pixels Protection: Ion-X strengthened glass Misc: 394 x 324 pixels 3D Touch display | 
| Hardware | CPU: Apple S2 (16 nm) Internal Memory: 8GB 512MB RAM Card Slot:No GPU: PowerVR G6200 SIM: No | CPU: Apple S4 Internal Memory: 16GB 1GB RAM Card Slot:No GPU: PowerVR SIM: eSIM | 
| Software | watchOS 3.0, upgradable to 6.2.8 | watchOS 5.0, upgradable to 9.5 | 
| Network | Network: No 2G: - 3G:- 4G: - 5g: - | Network: GSM / HSPA / LTE 2G: GSM 850 / 900 / 1800 / 1900 3G:HSDPA 4G: LTE 5g: - | 
| Body | Dimensions: 39.2 x 34 x 11.8 mm Weight: 39.6 g body Colors:Sport Band/White Misc: Glass front (Sapphire crystal), ceramic back, ceramic frame 50m water resistant | Dimensions: 40 x 34 x 10.7 mm Weight: 40 g Colors:Silver, Gold, Space Black Misc: Glass front, ceramic/sapphire crystal back, stainless steel frame 50m water resistant ECG certified (region dependent software application, hardware available on all models) | 
| Connectivity | WiFi: Wi-Fi 802.11 b/g/n Bluetooth: 4.0, LE - USB:No NFC: Yes Radio: No Misc: - | WiFi: Wi-Fi 802.11 b/g/n Bluetooth: 5.0, A2DP, LE - USB:No NFC: Yes Radio: No Misc: - | 
| Audio | Speaker: Loudspeaker Audio Port: No 3.5mm jack Audio Format: - Misc:- | Speaker: Loudspeaker Audio Port: No 3.5mm jack Audio Format: - Misc:- | 
| Rear Camera | Resolution: No Video: - Features: - - | Resolution: No Video: - Features: - - | 
| Front Camera | Resolution: - Features: - - | Resolution: - Features: - - | 
| Maps | GPS, GLONASS | GPS, GLONASS, GALILEO, QZSS | 
| Sensors | Accelerometer Gyro Heart Rate - | Accelerometer Gyro Heart Rate Barometer - | 
| Battery | Capacity: Li-Ion 273 mAh (1.03 Wh), non-removable Misc: Wireless charging - | Capacity: Li-Ion 225 mAh (0.86 Wh), non-removable Misc: Wireless charging - | 
| SAR | - | - | 
| Misc | Natural language commands and dictation | Natural language commands and dictation (talking mode) | 
| Models | A1816 | A1975, A1976, A2007, A2008 | 
| Price | - | - |