- 49mm titanium case size
- LTPO2 OLED Always-On Retina display - Up to 3,000 nits
- ECG app - High and low heart rate notifications1, Irregular rhythm notifications, Low cardio fitness notifications, Blood Oxygen app
- Sleep Tracking - Sleep apnea notifications
- Vitals app featuring heart rate, respiratory rate, wrist temperature, blood oxygen and sleep duration
- Temperature sensing - Cycle tracking with retrospective ovulation estimates
- Water resistant - Swimproof13, 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, Precision Finding for iPhone
- Up to 36 hours of normal use, Up to 72 hours in Low Power Mode19, Fast charging (0–80% in about 1 hour)
**You will be notified in your order confirmation of any substitutions. Please note that substitutions will be of equal or greater value**
