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