The Apple Watch Ultra 4 is Apple’s most rugged and capable smartwatch, designed for endurance athletes and outdoor adventurers. It retains the Ultra 3’s 49mm titanium case, 3,000-nit display, action button, dual-frequency GPS, satellite connectivity, 100-meter water resistance, and support for recreational diving.
Inside, the new S11 processor powers the redesigned heart rate detection system also found in the Series 12. It measures heart rate every five seconds throughout the day and enables Audio Intelligence features including sound recognition, Live Rewind and Siri Recap. Still-pending Live Rewind and Siri Recap are currently in the watchOS 27.3 developer beta.
Key advantages and limitations
Battery life is the Ultra 4’s biggest improvement, increasing from 42 to 50 hours in normal use. Extended Workout Mode provides up to 25 hours with full GPS and heart rate measurements, while Max Extended Workout Mode can track outdoor runs and walks for up to 45 hours. Charging is faster too: a 15-minute charge provides up to 18 hours of use.
Satellite connectivity, precision dual-frequency GPS, diving support and bright display make it particularly suitable for demanding environments. However, its 49mm case is large and heavy, while charging to 80 percent takes about 45 minutes, compared to about 30 minutes for the Series 12. The external design is also largely unchanged. The price remains at $799, double the Series 12’s starting price.
Who should buy the Apple Watch Ultra 4?
Choose the Ultra 4 if you need the longest battery life of the Apple Watch, high-precision GPS, satellite connectivity, diving support, or extended workout tracking. It is especially suitable for runners, hikers, cyclists, divers and anyone who regularly spends more than a day away from a charger.
Its long battery life could also appeal to travelers and people who work long shifts, even if they don’t play extreme sports.
Who shouldn’t buy one?
Most people will be better served by the smaller and less expensive Series 12. It offers the same S11 processor, redesigned heart rate sensor, and core Audio Intelligence features without the bulk or $799 price of the Ultra. If you don’t need satellite communication, precision GPS, dive support, or exceptionally long training tracking, you’re unlikely to benefit from the additional expense.
Should you buy an older Apple Watch Ultra?
The Ultra 3 is still a solid alternative at a substantial discount, although its battery lasts up to 42 hours instead of 50. The Ultra 2 is the older model compatible with watchOS 27 and may also be worth considering for the right price, but it lacks some newer connectivity and battery improvements. Avoid the original Ultra unless it’s exceptionally cheap, because it can’t run watchOS 27.
