Speakingof charging, the Apple Watch Ultra charges faster than any rival. Its bundled charger takes around an hour to get its battery from 0 to 80% — enough for days of use. Plus, unlike rivals that use clunky proprietary chargers, the Apple Watch Ultra is backed by a vast selection of original and third-party chargers and battery packs. Thebattery is much longer. You get dual-frequency GPS for more accurate runs. The Watch Ultra has Apple's best water resistance yet, and is the first Apple Watch suitable for diving. There's a really loud siren for if you get lost Howto charge Apple Watch Ultra or Series 8 with the charger and check the battery. No USB-C power adapter is included in the box, but the old USB-A cables w Incontrast, the Apple Watch Ultra 2 exhausted its battery in just over 2 days, or 56 hours. While the Apple Watch offers a range of features, it sacrifices battery duration. WHOOP 4.0’s focused functionality gives it an edge in battery performance. Timeneeded: 2 minutes. Steps to Force Restart Apple Watch Ultra 2. Press and hold the Side button and the Digital Crown until the screen turns black and only AppleWatch Ultra has a water resistance rating of 100 meters under ISO standard 22810. Testing conducted by Apple in August 2022 using preproduction Apple Watch Ultra (GPS + Cellular) paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, cellular network, signal strength, and JustifyingApple’s optimism, the Ultra passed our battery tests with flying colors. The Series 8, which we tested earlier this month, lasted 32.5 hours; the Ultra managed 72.5, scraping into TheApple Watch Ultra 2 gets the same S9 chip that debuts on the Apple Watch Series 9, and aside from a 30% faster GPU, it adds a four-core Neural Engine. each testing a different battery mode Availablein three models: Apple Watch Ultra 2, Apple Watch Series 9 and Apple Watch SE. All-day battery life is based on the following use: 90 time checks, 90 notifications, 45 minutes of app use and a 60-minute workout with music playback from Apple Watch via Bluetooth, over the course of 18 hours; Apple Watch SE (2nd generation) (GPS TheUltra one-ups the Apple Watch Series 8 ($399) in just about every way, with a more durable build, significantly longer battery life, a bigger and brighter display, a three-microphone array to HRm6m.