Product Description

Apple Watch Series 12 – Official Technical Specifications

Design & Build

Case Sizes: Available in 42mm and 46mm sizes.

Case Materials: Available in aluminum, titanium, and ceramic cases.

Finishes:

• Aluminum: Dark Bronze, Light Gold, Black, Space Gray
• Titanium: Radiant Gold, Natural
• Ceramic: Pearl White, Night Blue

Front Protection: Aluminum models feature Ceramic Shield 2, while titanium and ceramic models feature a sapphire front crystal.

Water & Dust Resistance: Rated WR50 for water resistance and IP6X for dust resistance.

Size & Weight

46mm

Height: 46mm
Width: 40mm
Depth: 9.7mm

Weight:

• Aluminum GPS: 39.5g
• Aluminum GPS + Cellular: 38.6g
• Titanium: 44.9g
• Pearl White Ceramic: 51.3g
• Night Blue Ceramic: 52.9g

42mm

Height: 42mm
Width: 37mm
Depth: 9.7mm

Weight:

• Aluminum GPS: 32.2g
• Aluminum GPS + Cellular: 31.5g
• Titanium: 36.5g
• Pearl White Ceramic: 41.7g
• Night Blue Ceramic: 42.8g

Display

Apple Watch Series 12 features an Always-On Retina display with wide-angle OLED technology and LTPO3.

46mm

Resolution: 416 × 496 pixels
Display Area: 1,196 sq. mm
Pixel Density: 326 ppi

42mm

Resolution: 374 × 446 pixels
Display Area: 970 sq. mm
Pixel Density: 326 ppi

Brightness: Up to 2,000 nits peak brightness with a minimum brightness of 1 nit.

Refresh Rate: 1Hz Always-On capability for power efficiency.

Performance

Chip: S11 SiP with 64-bit dual-core processor

Neural Engine: 4-core Neural Engine

Storage: 64GB

Apple Intelligence: Supports Apple Intelligence-powered Siri AI and new intelligent features through watchOS 27.

Audio Intelligence: Supports features including Live Rewind, Siri Recap, Shazam, and Sound Recognition.

Health & Wellness

Apple Watch Series 12 introduces an upgraded Health Sensing System designed for more frequent and accurate health measurements.

Heart Rate: High-frequency background heart rate tracking, with the new optical sensor measuring heart rate every five seconds.

HRV: More frequent Heart Rate Variability measurements for improved insights into stress and recovery.

Readiness Score: Helps determine whether your body is ready for activity or needs more recovery.

Health Age: Provides insights into how your health metrics are tracking relative to your age.

ECG: Built-in ECG app.

Blood Oxygen: Blood Oxygen app and sensor.

Sleep Tracking: Tracks sleep stages, sleep duration, sleep score, and sleep apnea notifications.

Temperature: Wrist temperature sensing.

Other Health Features: High and low heart rate notifications, irregular rhythm notifications, recovery HRV, cycle tracking, medications, mindfulness, and noise monitoring.

Fitness & Workout Tracking

Supports advanced workout tracking including:

• Running
• Cycling
• Swimming
• Hiking
• Walking
• HIIT
• Strength training
• Yoga
• Pilates
• Multisport
• Skiing
• Snowboarding
• Rowing
• Golf
• Kickboxing

Training Features: Training Load, Heart Rate Zones, VO₂ max, cadence, stride length, running power, race route, pacer, and automatic track detection.

Sensors

Apple Watch Series 12 includes:

• Third-generation electrical heart sensor
• Always-On optical heart sensor
• Blood oxygen sensor
• Temperature sensor
• Compass
• Always-On altimeter
• High-g accelerometer
• High-dynamic-range gyroscope
• Ambient light sensor
• Depth gauge up to 6 meters
• Water temperature sensor

Connectivity

Wireless: Wi-Fi 4 (802.11n), 2.4GHz and 5GHz

Bluetooth: Bluetooth 5.3

GPS: Precision L1 GPS with GPS, GLONASS, Galileo, QZSS, and BeiDou

Ultra Wideband: Second-generation Ultra Wideband chip

Cellular: Selected models support 5G RedCap and LTE connectivity.

Other: Apple Pay and GymKit support.

Battery & Charging

Battery Life: Up to 24 hours of normal use.

Low Power Mode: Up to 38 hours.

Outdoor Workout: Up to 10 hours.

Fast Charging: Up to 80% charge in approximately 30 minutes.

15-Minute Charge: Provides up to 12 hours of normal use.

Safety Features

Apple Watch Series 12 includes advanced safety features such as:

• Emergency SOS
• Fall Detection
• Crash Detection
• Check In
• International emergency calling
• Noise monitoring
• Backtrack

Operating System

Ships with watchOS 27, featuring a redesigned experience with Apple Intelligence-powered Siri AI, new health insights, improved workouts, and enhanced Smart Stack functionality.

Summary

Apple Watch Series 12 combines a refined design with Apple’s most advanced wearable health-sensing system yet.

With 42mm and 46mm case sizes, aluminum, titanium, and ceramic options, a 2,000-nit Always-On Retina display, and the new S11 chip, Series 12 delivers a powerful combination of performance, health tracking, fitness features, and everyday connectivity.

The new Health Sensing System enables higher-frequency heart rate and HRV measurements, while the new Readiness Score and upcoming Health Age features provide deeper insights into recovery and overall wellness.

With up to 24 hours of battery life, fast charging, WR50 water resistance, IP6X dust resistance, and advanced safety features, Apple Watch Series 12 is designed to keep you active, connected, and informed throughout the day.

At a Glance

Feature	Specification
Case Sizes	42mm, 46mm
Case Materials	Aluminum, Titanium, Ceramic
Display	Always-On Retina OLED with LTPO3
Peak Brightness	2,000 nits
46mm Resolution	416 × 496 pixels
42mm Resolution	374 × 446 pixels
Processor	S11 SiP
Neural Engine	4-core
Storage	64GB
Battery Life	Up to 24 hours
Low Power Mode	Up to 38 hours
Fast Charging	Up to 80% in ~30 minutes
Water Resistance	WR50
Dust Resistance	IP6X
Bluetooth	Bluetooth 5.3
GPS	Precision L1 GPS
Cellular	5G RedCap + LTE on supported models
Health System	Health Sensing System
Key Health Features	ECG, Blood Oxygen, HRV, Readiness Score, Sleep Tracking
Operating System	watchOS 27