Extra Features

• LTPO2 OLED Always‑On Retina display
• Up to 3000 nits 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 to gauge 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
• Fast charging (0–80% in about 1 hour)