Apple Watch Ultra 4
Up to 18 h in an outdoor workout, with dual-frequency GPS. Extended Workout stretches that to 25 h, but running form metrics stop working.
What the maker states
| GPS battery | 18 h, Outdoor workout, HR on, without iPhone |
|---|---|
| Battery | 50 h, Normal use |
| Weight | 63 g, Natural titanium |
| Case size | 49 mm |
| Water rating | 100 m, IP6X |
| Display | Always-On Retina OLED LTPO |
| Satellite systems | Dual-frequency GPS, Galileo, QZSS, BeiDou |
| Heart rate sensor | Always-on optical, electrical heart sensor |
| External sensors | Bluetooth power meters |
| Training metrics | Running power, ground contact time, power zones, multisport |
| App | Apple Fitness and Health |