A faster dual-core chip in the same 38mm/42mm case as the original — like the 1st generation, it has no built-in GPS or cellular and relies entirely on a paired iPhone for location and connectivity.
| Chip | Apple S1P (dual-core) |
| Case sizes | 38mm / 42mm |
| Connectivity | Wi-Fi + Bluetooth only (GPS via paired iPhone) |
| Cellular | Not available |
| Display | OLED Retina, sapphire or Ion-X glass |