Apple Watch Series 4

Works with: iPhone only
Display: LTPO OLED
Case sizes: 40 / 44 mm
Water resistance: 5 ATM
Weight: 36.7 g
Cellular: LTE version

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Apple Watch Series 4 at a glance

GPS

Built-in GPS

No maps. Runs and rides without your phone.
Display

LTPO OLED

Up to 1,000 nits and touchscreen.
Health

Heart rate and activity

Heart rate, steps and sleep.
Phone & smart

iPhone only

LTE and payments.
Build

5 ATM water rating

36.7 g. 2 case sizes.

Apple Watch Series 4 full specifications

Overview

Brand	Apple
Model	Apple Watch Series 4
Series	Apple Watch
Versions	40mm Aluminum GPS, 44mm Aluminum GPS + Cellular, 40mm Aluminum GPS + Cellular, 40mm Stainless Steel GPS + Cellular, 44mm Stainless Steel GPS + Cellular, Apple Watch Nike+, Apple Watch Hermès

Platform & apps

Needs an iPhone, running watchOS.

A paid plan adds extra insights, but the core features are free.

Operating system	watchOS
Works with	iPhone only
Minimum iOS	iOS 12
Chipset	S4
Storage	16 GB
Subscription	Optional

Display

A vivid, high-contrast screen that is easy to read indoors and out.

Up to 1,000 nits and touchscreen.

Display type	LTPO OLED
Display name	LTPO OLED Retina display with Force Touch
Resolution	368 x 448
Peak brightness	1,000 nits
Colour display	Yes
Touchscreen	Yes
Controls	touchscreen

Design & durability

Comes in 2 case sizes (40, 44 mm) weighing 36.7 g.

Rated 5 ATM: fine for swimming laps and showers.

Case sizes	40 / 44 mm
Weight (case)	36.7 g
Case material	Aluminum
Back material	Ceramic and sapphire crystal
Water resistance	5 ATM
Water standard	ISO 22810:2010

Battery

All battery modes	Battery saver: 18 hours
Battery type	Li-ion
Charging	wireless
Wireless charging	Yes

GPS & navigation

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

GPS	Built-in
Satellite systems	GPS, GLONASS, Galileo, QZSS

Health & sensors

Sensors	optical HR, ECG electrode, accelerometer, gyroscope, barometer, ambient light

Smart features

Smart extras include an LTE version and contactless payments.

LTE needs a carrier plan.

Speaker	Yes
Microphone	Yes
Contactless payments	Yes
Payment service	Apple Pay
Cellular	LTE version available
Wi-Fi	802.11b/g/n 2.4GHz
Bluetooth	Bluetooth 5.0

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.