Apple

Apple Watch Ultra 4 vs Apple Watch Ultra 2: 36 to 50 Hours, S9 to S11 and Satellite Added

Wed, 09 Sep 2026 · By Endurance Wire

Image: Apple Apple Watch Ultra 4 raises the battery rating from the Ultra 2’s 36 hours to 50, moves two chip generations from the S9 to the S11, adds satellite messaging that Ultra 2 never had, charges to 80 percent in about 45 minutes instead of about an hour, and keeps the $799 price Apple set for Ultra 2 in 2023. Ultra 2 stays on Apple’s watchOS 27 list, so this is a hardware decision rather than a support one. Apple Watch Ultra 4 keeps the 49 mm titanium case but raises the battery rating to 50 hours.