Apple Watch SE (3rd Gen)

Size and Weight

44mm

Height: 44mm

Width: 38mm

Depth: 10.7mm

368 by 448 pixels

977 sq mm display area

Weight (GPS): 32.9 grams

Weight (GPS + Cellular): 33.0 grams

Fits 140–245mm wrists

40mm

Height: 40mm

Width: 34mm

Depth: 10.7mm

324 by 394 pixels

759 sq mm display area

Weight (GPS): 26.3 grams

Weight (GPS + Cellular): 26.4 grams

Fits 130–200mm wrists

Controls

Digital Crown with haptic feedback

Side button

Double tap and wrist flick gestures

Siri with on‑device processing

Chip

S10 chip with 64‑bit dual core processor

4‑core Neural Engine

64GB capacity

Sensors

Second-generation optical heart sensor

Temperature sensor¹

Compass

Always-on altimeter

High-g accelerometer

High dynamic range gyroscope

Ambient light sensor

Health and Wellness

Cycle Tracking app with retrospective ovulation estimates²

Heart Rate app

High and low heart rate notifications

Irregular rhythm notifications³

Medications app

Mindfulness app

Noise app

Sleep app including sleep stages

Sleep score

Sleep apnea notifications⁴

Display

Always-On Retina display with OLED and LTPO

Tough Ion-X front glass with 4x crack resistance⁵

Up to 1000 nits peak brightness

2 nits minimum brightness

326 pixels per inch

Audio

Speaker

Microphone

Media playback

Power and Battery Life

All‑day battery life, up to 18 hours of normal use⁶

Up to 32 hours in Low Power Mode⁶

Built‑in rechargeable lithium‑ion battery

Fast‑charge capable⁷

Up to 80% charge in about 45 minutes⁷

15 minutes for up to 8 hours of normal use⁸

8 minutes for up to 8 hours of sleep tracking⁸