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The Apple Watch Ultra 4 is Apple's largest, toughest smartwatch, built for runners, hikers and triathletes. It pairs a 49mm titanium case with GPS + Cellular so it works without a phone, and adds high-frequency HRV readings, a readiness score and the Vitals app for recovery tracking. Its headline claim is multi-day battery life, up to 45 hours in extended workout mode with a 15-minute fast charge for up to 18 hours of use. Against Garmin's endurance watches it trades some battery stamina for a much richer app and health ecosystem; against the standard Apple Watch it is bigger, heavier and far longer-lasting.
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Lowest price we've seen: $699.99 on Nov 11 at Amazon. Tracked across 1 store since Nov 11.
Apple Watch Ultra 4 is a GPS + Cellular smartwatch for running and sports. It has a 49mm black titanium case, a sapphire crystal display and a Burgundy Trail Loop band in size M/L. The case is built for extreme environments and is water resistant up to 100m.
Battery life runs up to 45 hours of Max Extended Workout tracking. A 15-minute fast charge gives up to 18 hours of use. For training, it has precision dual-frequency GPS, Pacer, Heart Rate Zones, Custom Workouts and training load. Heart rate sensing includes HRV readings as often as every five minutes and background heart rate readings every five seconds.
Health features include the Vitals app for overnight metrics, a daily sleep score, cycle tracking, blood oxygen readings and a readiness score. The watch can detect a hard fall or severe car crash. Built-in satellite communications let you text emergency services without cell service or Wi-Fi. With cellular, you can make and take calls, stream music and podcasts, and listen with AirPods without your iPhone. Siri AI and Audio Intelligence are supported.
![Apple Watch Series 9 [GPS 41mm] Smartwatch with Starlight Aluminum Case and Starlight Sport Loop](https://i5.walmartimages.com/asr/38b436d0-93e0-4fdb-8d1f-f1e8315e846d.4515f3eedd139464299fd23c4e57fe13.jpeg?odnHeight=600&odnWidth=600&odnBg=ffffff)
