Tech Spec Spec it right!

Apple Apple Watch Series 12

Apple's 2026 mainline Watch, built around the S11 chip and an expanded Health Sensing System, in 42mm and 46mm aluminum, titanium and ceramic cases.

Chip

Chip
Apple S11, 64-bit dual-core processor
Neural Engine
4-core Neural Engine
Storage
64GB capacity
Audio Intelligence
Live Rewind, Siri Recap, Shazam, Sound Recognition (requires Apple Intelligence-enabled iPhone 16 or later)

Display

Type
Always-On Retina display, wide-angle OLEDs, LTPO3, 1Hz refresh
Resolution (46mm)
416×496 px, 326 ppi, 1196 sq mm active area
Resolution (42mm)
374×446 px, 326 ppi, 970 sq mm active area
Brightness
2000 nits peak; 1 nit minimum
Protection
Ceramic Shield 2 (aluminum cases); sapphire front crystal (titanium and ceramic cases)

Audio

Audio
Speaker; microphone with Voice Isolation; media playback

Connectivity

Wi-Fi / Bluetooth
Wi-Fi 4 (802.11n), 2.4GHz and 5GHz; Bluetooth 5.3
GPS
Precision L1 GPS (GPS, GLONASS, Galileo, QZSS, BeiDou)
Ultra Wideband
Second-generation Ultra Wideband chip
Cellular (GPS + Cellular, models A3582/A3587)
RedCap 5G and LTE: FDD-5G NR (n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71), TDD-5G NR (n38, n40, n41), FDD-LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 66, 71), TDD-LTE (38, 39, 40, 41)
Payments / fitness
Apple Pay, GymKit

Battery

Typical use
Up to 24 hours
Low Power Mode
Up to 38 hours
Outdoor workout (GPS)
Up to 10 hours
Charging
Fast-charge capable; up to 80% charge in ~30 minutes; 15 minutes for up to 12 hours of normal use; 5 minutes for up to 10 hours of sleep tracking; built-in rechargeable lithium-ion battery

Sensors

Health Sensing System
Second-generation electrical heart sensor, always-on optical heart sensor, blood oxygen sensor, temperature sensor
Motion / environment
Compass, always-on altimeter, high-g accelerometer, high dynamic range gyroscope, ambient light sensor, depth gauge to 6 meters, water temperature sensor

Health

Apps
Readiness; Vitals (heart rate, respiratory rate, wrist temperature, sleep duration, HRV); Blood Oxygen; ECG; Heart Rate; Advanced Cycle Tracking (fertile window, retrospective ovulation, perimenopause/menopause support); Medications; Mindfulness (state of mind tracking); Noise; Sleep (stages, sleep score)
Notifications
High and low heart rate; irregular rhythm; recovery HRV; sleep apnea; hypertension

Physical

Case sizes
42mm, 46mm
Height
42mm case: 42mm (aluminum/titanium), 43mm (ceramic); 46mm case: 46mm (aluminum/titanium), 47mm (ceramic)
Width
42mm case: 37mm; 46mm case: 40mm (aluminum/titanium), 41mm (ceramic)
Depth
9.7mm (aluminum, titanium); 9.85mm (ceramic)
Weight
42mm: 31.5–42.8 g; 46mm: 38.6–52.9 g, depending on material and connectivity
Wrist fit
42mm case fits 130–200mm wrists; 46mm case fits 140–245mm wrists
Water / dust resistance
Water resistance 50m (swimproof) under ISO standard 22810:2010; dust resistance IP6X
Materials / finishes
Aluminum case: Dark Bronze, Light Gold, Black, Space Gray. Titanium case: Radiant Gold, Natural. Ceramic case: Pearl White, Night Blue
Controls
Digital Crown with haptic feedback, side button, band release button, single/double tap and wrist flick gestures

Operating systems

OS
watchOS 27