Apple Watch SE Technical Specifications

Material and Finish

Aluminum case

Midnight, Starlight, Silver

Size and Weight
  • Height: 44mm
  • Width: 38mm
  • Depth: 10.7mm
  • Weight (GPS):

    32.9 grams
  • Fits 140–245mm wrists
  • Height: 40mm
  • Width: 34mm
  • Depth: 10.7mm
  • Weight (GPS):

    26.4 grams
  • Fits 130–200mm wrists
Hardware and Buttons

Digital Crown


Side button

Speaker/air vent

Optical heart sensor

  • Digital Crown with haptic feedback
  • Side button
  • S8 SiP with 64-bit dual-core processor
  • 2-core Neural Engine
  • 32GB capacity
  • 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 notifications
  • Irregular rhythm notifications1
  • Medications app
  • Mindfulness app
  • Noise app
  • Sleep app including sleep stages
  • Retina LTPO OLED display
  • Ion-X front glass
  • Up to 1000 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
  • Learn more
Operating System
  • watchOS 10
  • watchOS is the world’s most advanced wearable operating system, with apps and features designed to keep you active, healthy, safe, and connected.
  • Learn more about watchOS 10
Workouts and Activity
  • Custom interval workouts
  • Customizable Workout Views
  • Heart Rate Zones
  • Race Route
  • Stride length, ground contact time, and vertical oscillation
  • Automatic track detection
  • Multisport workout

  • Bearing, incline, elevation, and coordinates
  • Custom waypoints
  • Automatically generated waypoints to cellular connectivity
  • Backtrack GPS data
  • Topographic maps for over 1000 national and regional parks (U.S. only)

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

  • Pool swim or open water swim
  • Splits and auto sets
  • SWOLF score
  • Automatic stroke detection
  • Kickboard
  • Average pace, total distance, and laps

More Workouts
  • Emergency SOS4
  • International emergency calling5
  • Crash Detection4
  • Fall Detection

Water resistance 50m (swimproof)6

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

Built-in accessibility features supporting vision, mobility, hearing, and cognitive disabilities.

Learn more
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
  • RTT Support
  • Audio Volume Balance
  • Audio Transcription
  • Live Speech
  • Accessibility Shortcut
  • Mono Audio
  • Taptic Time
  • Personal Voice
Environmental Requirements
Operating temperature:

0° to 35° C (32° to 95° F)

Nonoperating storage temperature:

–20° to 45° C (–4° to 113° F)

Relative humidity:

5% to 90% noncondensing

Operating altitude:

0m to 3000m (0 feet to 10,000 feet)

Apple Watch SE and the Environment

Apple Watch SE paired with Sport Loop is designed to reduce environmental impact:7

Progress toward Apple 2030

Apple Watch SE paired with Sport Loop is one of Apple’s first carbon neutral products:

  • 30% recycled or renewable content8
  • 100% of manufacturing electricity sourced from clean electricity9
  • 50% or more shipped without airplanes10
  • 75% emissions reduction against baseline11
  • 7.2 kg CO2e total remaining emissions covered by high-quality carbon credits


  • 100% recycled aluminum in the case
  • 100% recycled gold in the plating of multiple printed circuit boards
  • 100% recycled tin in the solder of multiple printed circuit boards
  • 100% recycled tungsten in the Taptic Engine
  • 100% recycled rare earth elements in all magnets
  • 100% fiber-based packaging
  • 44% recycled content in fiber packaging


  • 100% of manufacturing electricity for Apple Watch SE and Sport Loop is sourced from clean electricity
  • 100% of expected customer energy use matched with clean electricity12
  • Meets California Energy Commission’s energy efficiency standards for battery charger systems13


  • No established final assembly sites generate waste sent to landfill as part of Apple’s Zero Waste Program

Smarter chemistry14

  • Arsenic-free display glass
  • Mercury-, BFR-, and PVC-free
  • Meets European REACH regulation on nickel

iPhone Xs or later with iOS 17 or later

In the Box
  • Apple Watch SE
  • Band
  • Apple Watch Magnetic Charger to USB-C Cable (1m)
Lined up in a row: front view of Apple Watch SE hardware, a starlight sport band, and Magnetic Charger to USB-C Cable.