L1 GPS, GLONASS, Galileo, QZSS, and BeiDou
Compass
Always-on altimeter
Water resistant
50 meters3
Certified IP6X dust resistant2
Blood oxygen sensor
(Blood Oxygen app)4
Electrical heart sensor
(ECG app)5
Third-generation optical heart sensor
International emergency calling6
Emergency SOS1
International roaming8
High-g accelerometer
Up to 256 g-forces with Fall Detection and Crash Detection
High dynamic range gyroscope
Ambient light sensor
Speaker
Microphone
Apple Pay
GymKit
Capacity 32GB