Apple Watch Series 9 Technical Specifications

Material and Finish

Aluminium case

Pink, Midnight, Starlight, Silver, (PRODUCT)RED

Size and Weight
  • Height: 45mm
  • Width: 38mm
  • Depth: 10.7mm
  • Weight (aluminium, GPS):
    38.7 grams
  • Fits 140–245mm wrists
  • Height: 41mm
  • Width: 35mm
  • Depth: 10.7mm
  • Weight (aluminium, GPS):
    31.9 grams
  • Fits 130–200mm wrists
Hardware and Buttons

Digital Crown


Side button

heart sensor

Speaker / air vent

Optical heart sensor

  • Digital Crown with haptic feedback
  • Side button
  • Double tap gesture
  • Siri
  • S9 SiP with 64‑bit dual‑core processor
  • 4‑core Neural Engine
  • 64GB capacity
  • Electrical heart sensor
  • Third‑generation optical heart sensor
  • Temperature sensing1
  • Compass
  • Always‑on altimeter
  • High‑g accelerometer
  • High dynamic range gyroscope
  • Ambient light sensor
Health and Wellness
  • ECG app2
  • Cycle Tracking app with retrospective ovulation estimates3
  • Heart Rate app
  • High and low heart rate notifications
  • Irregular rhythm notifications4
  • Medications app
  • Mindfulness app
  • Noise app
  • Sleep app including sleep stages
  • Always‑On Retina LTPO OLED display
  • Edge‑to‑edge display
  • Ion‑X front glass (aluminium cases)
  • Up to 2,000 nits maximum brightness
  • 1 nit minimum brightness
  • 326 pixels per inch
Power and Battery Life
  • All‑day battery life, up to 18 hours of normal use5
  • Up to 36 hours in Low Power Mode5
  • Built‑in rechargeable lithium‑ion battery
  • Fast‑charge capable6
  • Up to 80% charge in about 45 minutes6

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
  • Customisable 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
  • Backtrack GPS data
  • Topographic maps for over 1,000 national and regional parks (US 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 lengths

More Workouts
  • Emergency SOS7
  • Crash Detection7
  • Fall Detection
  • Water resistance 50m (swimproof)8
  • Dust resistance IP6X9
  • L1 GPS, GNSS, Galileo and BeiDou
  • Wi‑Fi 4 (802.11n)
  • Bluetooth 5.3
  • Second‑generation Ultra Wideband chip10
  • Apple Pay
  • GymKit

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

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
  • 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)

Non-operating storage temperature:

−20° to 45° C (−4° to 113° F)

Relative humidity:

5% to 90% non-condensing

Operating altitude:

0 to 3,000 metres (0 feet to 10,000 feet)

Apple Watch Series 9 and the Environment

Apple Watch Series 9 is designed to reduce environmental impact:11

See the Apple Watch Series 9 (Aluminium) Product Environmental Report (PDF)

Progress towards Apple 2030

Apple Watch Series 9 with aluminium case and Sport Loop is one of Apple’s first carbon-neutral products:

  • 30% recycled or renewable content12
  • 100% of manufacturing electricity sourced from clean electricity13
  • 50% or less shipped by air14
  • 78% emissions reduction against baseline15
  • 8.1kg CO2e total remaining emissions covered by high-quality carbon credits16


  • 100% recycled aluminium in the case
  • 100% recycled cobalt in the battery17
  • 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 and copper wire in the Taptic Engine
  • 100% recycled rare earth elements in all magnets
  • 100% recycled copper foil in the main logic board
  • 26% renewable plastic in the speaker
  • 100% fibre-based packaging18
  • 47% recycled content in fibre packaging


  • 100% of manufacturing electricity for carbon-neutral Apple Watch Series 9 with aluminium case and Sport Loop is sourced from clean electricity
  • 100% of expected customer energy use matched with clean electricity19
  • Meets California Energy Commission’s energy efficiency standards for battery charger systems20


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

Smarter chemistry21

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

Apple Trade In

Trade in your eligible device for credit towards your next purchase, or get an Apple Gift Card you can use anytime.22 If your device isn’t eligible for credit, we’ll recycle it for free.


iPhone Xs or later with iOS 17 or later

In the Box
  • Apple Watch Series 9
  • Strap
  • Apple Watch Magnetic Fast Charger to USB‑C Cable (1m)
Lined up in a row: front view of Apple Watch Series 9 hardware, a storm blue sport band, and Magnetic Fast Charger to USB-C Cable.