Samsung Galaxy Watch Ultra (2025)

Works with: Android only
Display: AMOLED, 1.5 in
Case sizes: 47 mm
Battery: 3.3 days
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 (2025) at a glance

Battery

A few days

Up to 80 hours in smartwatch mode. 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, blood oxygen and skin temperature.
Phone & smart

Android only

LTE, payments, music and calls.
Build

10 ATM water rating

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

Samsung Galaxy Watch Ultra (2025) full specifications

Overview

Brand	Samsung
Model	Galaxy Watch Ultra (2025)
Series	Galaxy Watch
Replaces	Galaxy Watch Ultra
Versions	Titanium Blue, Titanium Silver, Titanium Grey, Titanium White
Colours	Titanium Blue, Titanium Silver, Titanium Grey, Titanium White
Also sold as	Galaxy Watch Ultra LTE (47mm)

Platform & apps

Needs an Android phone, running Wear OS.

It has an app store for extra apps and watch faces.

Operating system	Wear OS
Works with	Android only
Minimum Android	Android 11
Chipset	Exynos W1000
RAM	2,048 MB
Storage	64 GB
App store	Yes

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
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 grade 4 (partial) with plastic and Grade 2 titanium
Lens	Sapphire crystal
Band fitting	Dynamic Lug System
Water resistance	10 ATM
IP rating	IP68
Water standard	ISO 22810:2010
MIL-STD-810 tested	Yes
Operating temperature	-20 to 55 °C
Max altitude	9,000 m

Battery

A few days: up to 80 hours in smartwatch mode.

With the always-on display, about 60 hours. With GPS on, up to 48 hours. Makers test with their own settings, so treat these as best-case figures.

Battery (smartwatch mode)	3.3 days
Battery (GPS)	2 days
All battery modes	Smartwatch: 3.3 days; 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	98 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, BeiDou, Galileo
Navigation features	turn-by-turn, back-to-start

Health & sensors

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

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, EDA, accelerometer, gyroscope, barometer, compass, ambient light, thermometer
Heart-rate sensor	BioActive 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
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
Siren	Yes

Training

Built for training, with the metrics serious athletes use.

It adds a triathlon mode and daily suggested workouts.

Triathlon / multisport	Yes
Swim tracking	Pool
Training metrics	VO2 max, training load, recovery time
Adaptive coaching	Yes
External sensors	power meter

Smart features

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

Voice assistant: Gemini. LTE needs a carrier plan.

Notifications	Yes
Message replies	Android
Calls on the watch	Yes
Speaker	Yes
Microphone	Yes
Voice assistant	Gemini
Contactless payments	Yes
Payment service	Samsung Wallet
Cellular	LTE version available
eSIM	Yes
Music storage	Yes
Wi-Fi	802.11a/b/g/n 2.4GHz+5GHz
Bluetooth	Bluetooth 5.3

Diving, golf & more

Specialist modes	ski
Diving	None

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.