Apple Watch Ultra 2
LTPO2 OLED Always‑On Retina display
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Up to 3000 nits
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ECG app
High and low heart rate notifications
Irregular rhythm notifications
Low cardio fitness notifications
Sleep Tracking
Sleep apnea notifications
Vitals app featuring heart rate, respiratory rate, wrist temperature, and sleep duration
Temperature sensing
Cycle Tracking with retrospective ovulation estimates
Emergency SOS
International emergency calling
Fall Detection and Crash Detection
Siren
Water resistant
Swimproof
Depth gauge to 40m
Water temperature sensor
High-speed water sports
Recreational scuba to 40m
Precision dual‑frequency GPS
Cellular connectivity
S9 SiP
Double tap gesture
Faster on-device Siri with health data access
Precision Finding for iPhone
Up to 36 hours normal use
Up to 72 hours in Low Power Mode
Fast charging (0–80% in about 1 hour)
