Material and Finish
Aluminum case
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 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
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
Audio
Speaker, Microphone, Media playback
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
Operating System
watchOS is the world’s most advanced wearable operating system, with apps and features designed to keep you active, healthy, safe, and connected.
Workouts and Activity
Running, Hiking, Cycling, Swimming
Safety
Emergency SOS, International emergency calling, Crash Detection, Fall Detection, Noise monitoring, Backtrack
Durability
Water resistance 50m (swimproof)
Connectivity
All Models
Support for 2.4GHz Wi-Fi networks
Wi-Fi 4 (802.11n) | Bluetooth 5.3
L1 GPS (GLONASS, Galileo, QZSS, and BeiDou)
Apple Pay, GymKit
Model A3326 and A3328
Supports RedCap for 5G and LTE
FDD‑5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71)
TDD‑5G NR (Bands n38, n40, n41)
FDD‑LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 66, 71)
TDD‑LTE (Bands 38, 39, 40, 41)
Support for Apple Watch For Your Kids
International roaming
Accessibility
Built‑in accessibility features supporting vision, mobility, hearing, and cognitive disabilities.
Features include:
VoiceOver, Zoom, On/Off Labels, Reduce Transparency, Increase Contrast, Color Filters, Text Size, Bold Text, Reduce Motion, Hourly Chimes, AssistiveTouch, Button Click Speed, Touch Accommodations, Auto-Answer Calls, Type to Siri, RTT Support, Audio Volume Balance, Auto Transcription, Live Speech, Accessibility Shortcut, Mono Audio, Taptic Time, Personal Voice, Live Listen
Environmental Requirements
Operating temperature:
32° to 95° F (0° to 35° C)
Nonoperating storage temperature:
–4° to 113° F (–20° to 45° C)
Relative humidity:
5% to 90% noncondensing
Operating altitude:
0 feet to 10,000 feet (0m to 3000m)
Compatibility
iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 26 or later
In the Box
Apple Watch SE 3
Band
Apple Watch Magnetic Fast Charger to USB‑C Cable (1m)
