Apple Watch Series 9

Works with: iPhone only
Display: LTPO OLED
Case sizes: 41 / 45 mm
Battery: 18 hours
Water resistance: 5 ATM
Weight: 38.7 g
Cellular: LTE version

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Apple Watch Series 9 at a glance

Battery

Charge most nights

Up to 18 hours in smartwatch mode.
GPS

Built-in GPS

Maps on the wrist. Runs and rides without your phone.
Display

LTPO OLED

Up to 2,000 nits and always-on option.
Health

ECG on the wrist

Measures ECG, blood oxygen and skin temperature.
Phone & smart

iPhone only

LTE, payments, music and calls.
Build

5 ATM water rating

38.7 g. 2 case sizes.

Apple Watch Series 9 full specifications

Overview

A smartwatch from Apple, released in 2023.

Brand	Apple
Model	Apple Watch Series 9
Series	Apple Watch
Released	2023
Versions	45mm Aluminum GPS, 45mm Aluminum GPS + Cellular, 45mm Stainless Steel, 41mm Aluminum GPS, 41mm Aluminum GPS + Cellular, 41mm Stainless Steel
Colours	Pink, Midnight, Starlight, Silver, (PRODUCT)RED, Gold, Graphite

Platform & apps

Needs an iPhone, running watchOS.

Operating system	watchOS
Works with	iPhone only
Minimum iOS	iOS 17
Chipset	S9 SiP
Storage	64 GB

Display

A bright, colourful screen that looks like a phone display.

Up to 2,000 nits and always-on option.

Display type	LTPO OLED
Display name	Always-On Retina LTPO OLED
Pixel density	326 ppi
Peak brightness	2,000 nits
Colour display	Yes
Always-on display	Yes
Controls	touchscreen, buttons, crown

Design & durability

Comes in 2 case sizes (41, 45 mm) weighing 38.7 g.

Rated 5 ATM: fine for swimming laps and showers.

Case sizes	41 / 45 mm
Case shape	Rectangular
Dimensions	45 x 38 x 10.7 mm
Thickness	10.7 mm
Weight (case)	38.7 g
Case material	Aluminum
Lens	Ion-X
Fits wrists	140-245 mm
Water resistance	5 ATM
IP rating	IP6X
Water standard	ISO 22810:2010
Operating temperature	0 to 35 °C
Max altitude	3,000 m

Battery

Charge most nights: up to 18 hours in smartwatch mode.

Makers test with their own settings, so treat these as best-case figures.

Battery (smartwatch mode)	18 hours
All battery modes	Smartwatch: 18 hours; Battery saver: 36 hours
Charging	puck
Wireless charging	Yes
Fast charging	0-80% in about 45 minutes

GPS & navigation

Built-in GPS, so you can record runs and rides without your phone.

You can download maps to the watch.

GPS	Built-in
Satellite systems	GPS, Galileo, BeiDou
Maps	Downloadable maps
Preloaded regions	U.S. only
Navigation features	back-to-start, waypoints

Health & sensors

A health-focused watch: it measures ECG, blood oxygen and skin temperature.

For sleep, it offers a nightly sleep score. It can warn you about an irregular heart rhythm. ECG availability can depend on your country.

Sensors	optical HR, ECG electrode, SpO2, skin temperature, accelerometer, gyroscope, altimeter, compass, ambient light
Heart-rate sensor	Third-generation optical heart sensor
Heart-rate tracking	24/7
ECG	Yes
Irregular rhythm alerts	Yes
High/low heart-rate alerts	Yes
Blood oxygen (SpO2)	Yes
Skin temperature	Yes
Respiration rate	Yes
Hypertension alerts	Yes
Sleep tracking	Sleep score
Sleep apnea alerts	Yes
Stress tracking	Yes
Cycle tracking	Yes

Safety

Detects hard falls and can call for help if you don't respond.

SOS works over its own LTE connection.

Emergency SOS	From the watch (LTE)
Fall detection	Yes
Crash detection	Yes

Training

Tracks your workouts and daily activity.

It adds a triathlon mode.

Triathlon / multisport	Yes
Swim tracking	Pool and open water
Training metrics	training load
Running dynamics	Yes
External sensors	Bluetooth sensors

Smart features

Smart extras include an LTE version, contactless payments, music storage and calls on the wrist.

Voice assistant: Siri. LTE needs a carrier plan.

Notifications	Yes
Calls on the watch	Yes
Speaker	Yes
Microphone	Yes
Voice assistant	Siri
Contactless payments	Yes
Payment service	Apple Pay
Cellular	LTE version available
Music storage	Yes
Wi-Fi	Wi-Fi 4 (802.11n)
Bluetooth	Bluetooth 5.3
Ultra-wideband	Yes

Diving, golf & more

Diving	None

Specs compiled from Apple's product pages and datasheets. Manufacturers revise hardware between versions, so check the version on the box. Spotted an error? Tell us.