Apple Watch Ultra 4 raises the battery target for Apple’s rugged smartwatch line to as much as 50 hours of normal use, an eight-hour increase over the previous generation. Low Power Mode is rated for up to 84 hours, 12 hours more than the Ultra 3 figure cited for comparison.
The watch retains a Grade 5 titanium case and will be offered in Natural Titanium and Black Titanium finishes. It uses Apple’s S11 chipset and an updated optical and electrical heart-rate monitoring system that can record heart rate every five seconds and measure heart-rate variability up to 24 times more frequently.
New software features include a 0-to-10 Readiness score intended to indicate physical preparedness, plus Health Age, which calculates a biological-age estimate. Audio Intelligence can flag important ambient sounds and generate conversation summaries through Siri.
Apple is also expanding its band selection. Trail Loop colors include Dark Umber, Sand and Burgundy; Alpine Loop adds Desert, Dark Olive and Burgundy; and the Ocean Band gains Translucent Gray, Translucent Kelp and Translucent Black options. International pricing and release timing have not been confirmed in the available details.
