44mm aluminum case
LTPO OLED Retina display
Up to 1000 nits
High and low
Heart rate notifications/Irregular rhythm notifications/Low cardio fitness
notifications
Sleep tracking
Vitals app featuring heart rate, respiratory rate, and sleep duration
Cycle Tracking
Emergency SOS/International emergency calling
50m/Water resistant/Swimproof
GPS/Wi-Fi only options
S8 SiP
Siri
Find iPhone
Up to 18 hours
Low power mode