The original Apple Watch, launched in 38mm and 42mm sizes — it relies on a paired iPhone for GPS and has no cellular option at all. The digitizer/display assembly and the non-removable battery are the most common repairs on this model.
| Chip | Apple S1 |
| Case sizes | 38mm / 42mm |
| Connectivity | Wi-Fi + Bluetooth only (GPS via paired iPhone) |
| Cellular | Not available |
| Display | OLED Retina, sapphire or Ion-X glass |