Apple Watch SE 3 Technical Specifications

Material and Finish

Aluminium case

Starlight, Midnight

Size and Weight
  • Height: 44mm
  • Width: 38mm
  • Depth: 10.7mm
  • 368x448 pixels
  • 977mm2 display area
  • Weight (GPS): 32.9g
  • Weight (GPS + Cellular): 33.0g
  • Fits 140–245mm wrists
  • Height: 40mm
  • Width: 34mm
  • Depth: 10.7mm
  • 324x394 pixels
  • 759mm2 display area
  • Weight (GPS): 26.3g
  • Weight (GPS + Cellular): 26.4g
  • Fits 130–200mm wrists
Hardware and Buttons
Controls
  • Digital Crown with haptic feedback
  • Side?button
  • Double tap and wrist flick?gestures
  • Siri
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
  • Irregular rhythm notifications3
  • Medications app
  • Mindfulness app
  • Noise?app
  • Sleep app including sleep?stages
  • Sleep?score
  • Sleep apnoea notifications4
Display
  • Always-On Retina display with OLED and?LTPO
  • Tough Ion-X front glass with 4x crack resistance5
  • Up to 1,000 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 use6
  • Up to 32 hours in Low Power Mode6
  • Built?in rechargeable lithium?ion battery
  • Fast?charge capable7
  • Up to 80% charge in about 45 minutes7
  • 15 minutes for up to 8 hours of normal use8
  • 8 minutes for up to 8 hours of sleep tracking8

Learn more

Operating System
  • watchOS
  • 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
  • Customisable 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 mobile connectivity
  • Backtrack GPS?data
  • Offline maps with custom route?creation
  • Topographic maps for thousands of national and regional parks (US?only)
  • Hundreds of curated hikes across all 63 US 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 SOS9
  • Crash Detection9
  • Fall?Detection
  • Noise monitoring
  • Backtrack
Durability
  • Water resistance 50m (swimproof)10
Connectivity
  • L1 GPS, GNSS, Galileo and?QZSS
  • 5G11 and LTE12
  • Wi-Fi 4?(802.11n)
  • Support for 2.4GHz Wi-Fi?networks
  • Bluetooth?5.3
  • Apple Pay13
  • GymKit
  • Support for Apple Watch For Your Kids14
Accessibility

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

Learn more

Features include:
  • VoiceOver
  • Zoom
  • On/Off?Labels
  • Reduce Transparency
  • Increase Contrast
  • Colour?Filters
  • Text?Size
  • Bold?Text
  • Reduce?Motion
  • Hourly?Chimes
  • AssistiveTouch
  • Button Click?Speed
  • Touch Accommodations
  • Auto-Answer Calls
  • Type to?Siri
  • Audio Volume?Balance
  • Auto Transcription
  • Live?Speech
  • Accessibility Shortcut
  • Mono?Audio
  • Taptic?Time
  • Personal?Voice
  • Live?Listen
Environmental Requirements
Operating temperature:

0° to?35° C

Non-operating storage temperature:

–20° to?45° C

Relative humidity:

5% to 90% non-condensing

Operating altitude:

0m to?3,000m

Apple Watch
and the Environment

Apple Watch SE 3 is designed to reduce environmental impact:15

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

Progress towards Apple 2030

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

See Apple’s commitment

Materials

Apple Watch SE 3 is made with 40% recycled content,16 including:

  • 100% recycled aluminium 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 electricity17
  • 100% of expected customer energy use matched with low-carbon electricity
  • Meets California Energy Commission’s energy efficiency standards for battery charger systems18

Packaging

  • 100% fibre-based packaging19
  • 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 Programme20

Smarter chemistry21

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
  • Strap
  • Apple Watch Magnetic Fast Charger to USB?C Cable (1m)
Apple Watch SE 3, aluminium case, midnight colour, front exterior, edge-to-edge display, midnight color Sport Band, Apple Watch Magnetic Fast Charger to USB-C Cable