09.09.2026 20:09 Uhr, Quelle: Macrumors

Apple Announces Apple Watch Ultra 4 With Two-Day Battery Life and Upgraded Health Tracking

Apple today announced the Apple Watch Ultra 4, featuring a new S11 chip, a redesigned health sensing system, and a larger battery that Apple says delivers two days of battery life. With improved power efficiency, Ultra 4 offers up to 18 hours of workout tracking with full GPS and heart rate monitoring, or 45 hours in its maximum extended workout mode. It comes in Black and Natural titanium, alongside new band colors and a new titanium Hermès band. The redesigned health sensing system features a larger electrode surface for improved skin contact during ECG readings, photodiodes arranged in a ring to capture light more efficiently, and larger, more power-efficient green LEDs for heart rate tracking. More frequent readings are displayed in an updated Heart Rate app and new watch face complications. Apple says the system delivers the most accurate heart rate tracking of any wearable, citing a study involving hundreds of participants running, cycling, and performing HIIT workouts, with an ECG chest stra

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