Apple Watch Series 12

31.5 grams (42mm)
39.5 grams (46mm)

42 x 37 x 9.7 mm (42mm)
46 x 40 x 9.7 mm (46mm)

Water resistance 50m (swimproof) under ISO standard 22810:2010
Dust resistance IP6X

Active area (42mm): 374 by 446 pixels, 326 pixels per inch
Active area (46mm): 416 by 496 pixels, 326 pixels per inch

2000 nits peak brightness
1 nit minimum brightness

Ceramic Shield 2 (aluminum cases)

Always‑On Retina display with wide‑angle OLEDs and LTPO3

S11 chip with 64-bit dual-core processor
Audio Intelligence (Live Rewind, Siri Recap, Shazam, Sound Recognition)
4-core Neural Engine

64GB capacity

Health Sensing System: second‑generation electrical heart sensor, always‑on optical heart sensor, blood oxygen sensor, and temperature sensor
Compass
Always‑on altimeter
High‑g accelerometer
High dynamic range gyroscope
Ambient light sensor
Depth gauge to 6 meters
Water temperature sensor

Digital Crown with haptic feedback
Side button
Single tap, double tap, and wrist flick gestures
Siri powered by Apple Intelligence

Readiness app
Vitals app with heart rate, respiratory rate, wrist temperature, sleep duration, and heart rate variability (HRV)
Blood Oxygen app
ECG app
Heart Rate app
High and low heart rate notifications
Recovery HRV
High‑frequency background heart rate tracking
Irregular rhythm notifications
Advanced Cycle Tracking app with fertile window estimates, retrospective ovulation estimates, and perimenopause and menopause support
Medications app
Mindfulness app with state of mind tracking
Noise app
Sleep app including sleep stages
Sleep score
Sleep apnea notifications
Hypertension notifications

Yes

Yes

watchOS