Apple Watch SE Technical Specifications

Material and Finish
Aluminum case
Midnight, Starlight, Silver

Size and Weight
Height: 44mm
Width: 38mm
Depth: 10.7mm
368 by 448 pixels
977mm² display area
Weight (GPS): 32.9g
Weight (GPS + Cellular): 33.0g
Fits 140–245mm wrists

Hardware and Buttons
Digital Crown
Microphone
Side button

Controls
Digital Crown with haptic feedback
Side button

Chip
S8 SiP with 64-bit dual-core processor
2-core Neural Engine
32GB capacity

Sensors
Second-generation optical heart sensor
Compass
Always-on altimeter
High-g accelerometer
High dynamic range gyroscope
Ambient light sensor

Health and Wellness
Heart Rate app
High and low heart rate notifications1
Irregular rhythm notifications1
Medications app
Mindfulness app
Noise app
Sleep app including sleep stages

Display
Retina LTPO OLED display
Ion-X front glass
Up to 1,000 nits maximum brightness
326 pixels per inch

Power and Battery Life
All-day battery life, up to 18 hours of normal use2
Built-in rechargeable lithium-ion battery
Up to 80% charge in about 1.5 hours3

Operating System
watchOS 11
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
Custom workouts
Customizable Workout Views
Training load
Heart Rate Zones
Race Route
Pacer
Stride length, ground contact time, and vertical oscillation
Automatic track detection
Multisport workout

Hiking
Compass with bearing, incline, elevation, and coordinates
Custom waypoints
Automatically generated waypoints to cellular connectivity
Backtrack GPS data
Offline maps with custom route creation
Topographic maps for over 1,000 national and regional parks (U.S. only)
Hundreds of curated hikes across all 63 U.S. national parks

Cycling
Average speed, elevation gained, and distance
Connection to cycling accessories via Bluetooth
Functional Threshold Power
Power Zones
Cadence
Live Activity on iPhone

Swimming
Pool swim or open water swim
Custom workouts for pool swims
Splits and auto sets
SWOLF score
Automatic stroke detection
Kickboard detection
Average pace, total distance, and laps
More Workouts
Skiing
Snowboarding
Outdoor
Rowing
Paddling
Golf
Walk
Elliptical
Rower
Stair Stepper
HIIT
Yoga
Functional Strength Training
Dance
Cooldown
Core
Training
Pilates
Tai Chi
Wheelchair
Kickboxing
Multisport

Safety
Emergency SOS4
Crash Detection4
Fall Detection
Noise monitoring
Backtrack

Durability
Water resistance 50m (swimproof)5

Connectivity
L1 GPS, GNSS, Galileo, and QZSS
LTE and UMTS6
Wi-Fi 4 (802.11n)
Bluetooth 5.3
GymKit

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
Audio Volume Balance
Audio Transcription
Live Speech
Accessibility Shortcut
Mono Audio
Taptic Time
Personal Voice

Environmental Requirements
Operating temperature: 0° to 35° C
Nonoperating storage temperature: –20° to 45° C
Relative humidity: 5% to 90% noncondensing
Operating altitude: 0m to 3,000m

Compatibility
iPhone XS or later, including iPhone SE (2nd generation or later), with iOS 18 or later