Apple?Watch?SE?3 Technical Specifications

Material and?Finish

Aluminum case

Starlight, Midnight

Size and Weight
  • Height: 44mm
  • Width: 38mm
  • Depth: 10.7mm
  • 368 by?448?pixels
  • 977 sq?mm display?area
  • Weight (GPS): 32.9?grams
  • Fits 140–245mm wrists
  • Height: 40mm
  • Width: 34mm
  • Depth: 10.7mm
  • 324 by?394?pixels
  • 759 sq?mm display?area
  • Weight (GPS): 26.3?grams
  • Fits 130–200mm wrists
Hardware and?Buttons
Controls
  • Digital?Crown with haptic feedback
  • Side button
  • Double tap and wrist flick gestures
Chip
S10 chip
  • S10 chip with 64‑bit dual core processor
  • 4‑core Neural?Engine
  • 64GB capacity
Sensors
  • Second-generation optical heart sensor
  • Temperature sensor1
  • Compass
  • Always-on altimeter
  • High-g accelerometer
  • High dynamic range gyroscope
  • Ambient light sensor
Health?and Wellness
  • Cycle Tracking app with retrospective ovulation estimates2
  • Heart Rate app
  • High and low heart rate notifications
  • Medications app
  • Mindfulness app
  • Noise app
  • Sleep app including sleep stages
  • Sleep score
Display
  • Always-On Retina display with OLED and LTPO
  • Tough Ion-X front glass with 4x crack resistance3
  • 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 use4
  • Up?to?32 hours in?Low Power Mode4
  • Built‑in rechargeable lithium‑ion battery
  • Fast‑charge capable5
  • Up?to?80% charge in?about 45 minutes5
  • 15 minutes for up?to?8 hours of?normal use6
  • 8 minutes for up?to?8 hours of?sleep tracking6

Learn more

Operating System
  • watchOS
  • watchOS is?complete with powerful 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
  • Multisport workout

Hiking
  • Compass with bearing, incline, elevation, and coordinates
  • Custom waypoints
  • Backtrack GPS data
  • Topographic maps for thousands of?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
Safety
  • Emergency SOS7
  • Crash Detection7
  • Fall Detection
  • Noise monitoring
  • Backtrack
Durability
  • Water resistance 50m (swimproof)8
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)

  • GymKit
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?3000m

Apple?Watch
and?the Environment

Apple?Watch SE?3 is?designed to?reduce environmental?impact:9

See the Apple?Watch SE?3 Product Environmental Report?(PDF)

Progress toward Apple 2030

Apple 2030 is?our commitment to?be?carbon neutral for our entire carbon footprint. Our plan to?decarbonize products is?rigorous and focuses on?transitioning to?low-carbon electricity, designing with recycled and low-carbon materials, and prioritizing lower-carbon ways of?shipping products, like ocean freight.

Materials

Apple?Watch SE?3 is?made with 40% recycled content,10 including:

  • 100% recycled aluminum in?the case
  • 100% recycled cobalt and 95% recycled lithium in?the battery
  • 100% recycled rare earth elements in?all magnets
  • 100% recycled gold plating and tin solder in?all Apple-designed printed circuit boards
  • 100% recycled tungsten in?the Taptic?Engine
  • 40% recycled glass in?the display glass

Energy

  • 100% of?manufacturing electricity for Apple?Watch SE?3 is?sourced from renewable electricity11
  • 100% of?expected customer energy use matched with low-carbon electricity
  • Meets California Energy Commission’s energy efficiency standards for battery charger systems12

Packaging

  • 100% fiber-based packaging13
  • Apple?Watch SE?3 packaging is?designed to?be?compact, enabling 40% more units per trip compared to?Apple?Watch?SE

Waste

No?established final assembly sites generate waste sent to?landfill as?part of?Apple’s Zero Waste?Program14

Smarter chemistry15

All of?the materials used in?Apple products, accessories, and packaging are covered by?the requirements of?our Regulated Substances Specification, which was one of?the first in?industry to?restrict the use of?key substances of?concern. See the latest Environmental Progress Report to?understand Apple’s recent efforts in?phasing out these chemistries.

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)
Apple?Watch?SE 3, aluminum case, midnight color, front exterior, edge-to-edge display, midnight color Sport Band, Apple?Watch Magnetic Fast Charger to USB‑C Cable