Apple Watch Series 7 Aluminum 45mm GPS vs Apple Watch Series 4 Aluminum 44mm - mobile2u.net
| Display Size | 1.9 inches | 1.78 inches |
| Display Type | Retina LTPO OLED | Retina LTPO OLED |
| Resolution | 484 x 396 pixels | 448 x 368 pixels |
| Protection | Ion X strengthened glass | Ion X strengthened glass |
| RAM | 1GB | 1GB |
| Storage | 32GB | 16GB |
| Chipset | Apple S7 | Apple S4 |
| CPU | Dual core | Dual core |
| GPU | PowerVR | PowerVR |
| Battery | 309 mAh Li-Ion | 292 mAh Li-Ion |
| Wireless Charging | (Qi) | (Qi) |
| OS | watchOS 10 | watchOS 10 |
| SIM | eSIM | eSIM |
| Bluetooth | 5.0 | 5.0 |
