Apple Watch SE 3 GPS 40mm

Size and Weight
Height: 40mm
Width: 34mm
Depth: 10.7mm
324 by 394 pixels
759 sq mm display area
Weight (GPS): 26.3 grams
Fits 130–200mm wrists

Chip
S10 chip
S10 chip with 64‑bit dual core processor
4‑core Neural Engine
64GB capacity

Display
Always-On Retina display with OLED and LTPO
Tough Ion-X front glass with 4x crack resistance
Up to 1000 nits peak brightness
2 nits minimum brightness
326 pixels per inch

Power and Battery Life
All‑day battery life, up to 18 hours of normal use
Up to 32 hours in Low Power Mode
Built‑in rechargeable lithium‑ion battery
Fast‑charge capable
Up to 80% charge in about 45 minutes
15 minutes for up to 8 hours of normal use
8 minutes for up to 8 hours of sleep tracking

Controls
Digital Crown with haptic feedback
Side button
Double tap and wrist flick gestures
Siri with on‑device processing

Sensors
Second-generation optical heart sensor
Temperature sensor
Compass
Always-on altimeter
High-g accelerometer
High dynamic range gyroscope
Ambient light sensor

Health and Wellness
Cycle Tracking app with retrospective ovulation estimates
Heart Rate app
High and low heart rate notifications
Irregular rhythm notifications
Medications app
Mindfulness app
Noise app
Sleep app including sleep stages
Sleep score
Sleep apnea notifications