Apple Watch Ultra 4

Apple's most capable watch, rebuilt underneath. The Apple Watch Ultra 4 keeps the 49mm Grade 5 titanium case and flat sapphire crystal, then replaces everything that matters: a new Health Sensing System with redesigned optical and electrical heart sensors reads heart rate every 5 seconds all day, samples HRV up to 24 times more often, and distills it into a daily Readiness score from 0 to 10 with a clear recommendation: Recover, Pace Yourself, Ready, or Go For It.

The S11 chip powers it all, including Apple Intelligence and Siri AI on watchOS 27. Battery jumps to up to 50 hours of normal use, 84 hours in Low Power Mode, and 45 hours in the new Max Extended Workout mode with full GPS. The display hits 3,000 nits. Water resistance to 100m with EN13319 recreational scuba certification to 40m. Satellite Emergency SOS, Messages, and Find My. Precision dual-frequency GPS. 5G cellular.

This is the flagship rugged smartwatch of 2026. Titanium, natural or black. For training, adventure, and everything in between.