Material and Finish
Aluminum available in midnight, starlight, silver, pink, and (PRODUCT)RED
Stainless Steel available in graphite, silver, and gold
Size and Weight
45mm by 38mm by 10.7mm (45mm)
38.7 grams (aluminum, GPS)
39.0 grams (aluminum, GPS + Cellular)
51.5 grams (stainless steel)
Chip
S9 SiP with 64-bit dual-core processor
W3 Apple wireless chip
Second-generation Ultra Wideband chip
4-core Neural Engine
64GB capacity
Sensors
Electrical heart sensor
Third-generation optical heart sensor
Speaker
Microphone
Always-on altimeter
Compass
Always-on altimeter
Waypoints, Backtrack, and Elevation view
High dynamic range gyroscope
Ambient light sensor
Health and Wellness
ECG app
Nightly wrist temperature tracking
Cycle Tracking app with retrospective ovulation estimates
Sleep apnea notifications
Vitals app featuring heart rate, respiratory rate, wrist temperature, and sleep duration
Medications app
Mindfulness app with state of mind tracking
Training load
Noise monitoring
GymKit
Display
LTPO OLED Always-on Retina display
Up to 2000 nits brightness
1 nit minimum brightness
Up to 3000 nits maximum brightness
1 nit minimum brightness
396 by 484 pixels
1143 sq mm display area
