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