Samsung Galaxy Watch Ultra

Works with: Android only
Display: AMOLED, 1.5 in
Case sizes: 47 mm
GPS battery: 2 days
Water resistance: 10 ATM
Weight: 60.5 g
Cellular: LTE version

We earn a commission from qualifying Amazon purchases made through our links, at no extra cost to you. This never affects our specs. How we make money.

Find it in these categories

Samsung Galaxy Watch Ultra at a glance

Battery

48 hours with GPS
GPS

Multi-band GPS

No maps. Runs and rides without your phone.
Display

AMOLED, 1.5 in

1.5 in, up to 3,000 nits, always-on option and touchscreen.
Health

ECG on the wrist

Measures ECG, blood pressure, skin temperature and HRV.
Phone & smart

Android only

LTE and calls.
Build

10 ATM water rating

60.5 g. Sapphire lens. MIL-STD-810.

Samsung Galaxy Watch Ultra full specifications

Overview

Brand	Samsung
Model	Galaxy Watch Ultra
Series	Galaxy Watch
Colours	Titanium Gray, Titanium Silver, Titanium White, Titanium Blue
Also sold as	Watch Ultra (2025)

Platform & apps

Needs an Android phone, running Wear OS.

Operating system	Wear OS
Works with	Android only
Minimum Android	Android 12
Chipset	3 nm Processor
RAM	2,000 MB
Storage	64 GB

Display

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

1.5 in, up to 3,000 nits, always-on option and touchscreen.

Display type	AMOLED
Display name	Super AMOLED
Screen size	1.5 in
Resolution	480 x 480
Pixel density	327 ppi
Peak brightness	3,000 nits
Colour display	Yes
Always-on display	Yes
Touchscreen	Yes

Design & durability

A 47 mm case weighing 60.5 g.

Rated 10 ATM: fine for swimming, snorkelling and water sports. A sapphire lens resists scratches. Tested to MIL-STD-810 for shock, heat and cold.

Case sizes	47 mm
Case shape	Round
Dimensions	47.4 x 47.1 x 12.1 mm
Thickness	12.1 mm
Weight (case)	60.5 g
Case material	Titanium
Lens	Sapphire crystal
Band material	Titanium
Band fitting	Dynamic Lug System
Water resistance	10 ATM
IP rating	IP68
MIL-STD-810 tested	Yes
Operating temperature	-20 to 55 °C
Max altitude	9,000 m

Battery

Up to 2 days with GPS on.

With the always-on display, about 60 hours.

Battery (GPS)	2 days
All battery modes	Always-on display: 2.5 days; Battery saver: 4.2 days; GPS: 2 days
Battery capacity	590 mAh
Battery type	Built-in battery
Charging	wireless
Wireless charging	Yes
Full charge time	96 min

GPS & navigation

Built-in multi-band GPS for accurate tracks, even near tall buildings and trees.

GPS	Built-in
Multi-band GPS	Yes
Satellite systems	GPS, GLONASS, Galileo, BeiDou
Navigation features	turn-by-turn, back-to-start

Health & sensors

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

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

Sensors	optical HR, ECG electrode, skin temperature, accelerometer, gyroscope, barometer, compass
Heart-rate sensor	BioActive Sensor
Heart-rate tracking	24/7
ECG	Yes
Irregular rhythm alerts	Yes
Heart-rate variability	Yes
Skin temperature	Yes
Blood pressure	cuff-calibrated
Sleep tracking	Sleep coaching
Sleep apnea alerts	Yes
Stress tracking	Yes
Energy score	Energy Score
Cycle tracking	Yes
Body composition	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

Training

Built for training, with the metrics serious athletes use.

It adds a triathlon mode.

Triathlon / multisport	Yes
Swim tracking	Pool
Training metrics	heart rate zones, Functional Threshold Power
External sensors	power meter

Smart features

Smart extras include an LTE version and calls on the wrist.

Voice assistant: Bixby. LTE needs a carrier plan.

Message replies	Android
Calls on the watch	Yes
Speaker	Yes
Microphone	Yes
Voice assistant	Bixby
Cellular	LTE version available
eSIM	Yes
Wi-Fi	Wi-Fi 4 (802.11n)
Bluetooth	Bluetooth 5.3

Diving, golf & more

Max dive depth	100 m

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