49mm titanium case, wide-angle always-on display up to 3000 nits, 5G cellular with satellite features, up to 42 hours battery.
| Case | 49mm titanium, Black |
| Display | Always-On LTPO3 OLED, wide-angle, up to 3000 nits |
| Chip | Apple S10 SiP with double-tap gesture |
| Storage | 64GB |
| Connectivity | GPS + Cellular (5G), satellite connectivity, dual-frequency GPS (L1 + L5), Wi-Fi, Bluetooth |
| Battery | Up to 42 hours; up to 72 hours in Low Power Mode |
| Water Resistance | 100 m (WR100) |
| Health | ECG app, sleep score, skin temperature sensing, hypertension notifications (availability varies by region) |
| Outdoor Features | Action button, depth gauge, water temperature sensor, 86 dB siren |
| Operating System | watchOS 26 |
Apple Watch Ultra 3 is Apple's most rugged and capable watch, built for endurance sports, diving and the outdoors. The 49mm titanium case holds a large, bright always-on display, a precision dual-frequency GPS, an Action button, a depth gauge and an 86-decibel siren.
With 5G cellular and satellite connectivity for emergency use, advanced health features and up to 42 hours of battery life (up to 72 hours in Low Power Mode), it is made to keep going where other watches stop.
