Samsung Galaxy Watch8 44 mm Bluetooth (SM-L330) / Samsung Galaxy Watch Ultra (47 mm, 2024)

Samsung Galaxy Watch8 44 mm Bluetooth (SM-L330): SM-L330 (44 mm, Bluetooth/Wi-Fi), aluminium case; Graphite and Silver. The 40 mm SM-L320, the LTE SM-L335 and the rotating-bezel Galaxy Watch8 Classic are separate models.

Samsung Galaxy Watch Ultra (47 mm, 2024): Galaxy Watch Ultra 47 mm (SM-L705, LTE); Titanium Gray, Titanium White and Titanium Silver at launch. The Galaxy Watch Ultra (2025), sold with a Titanium Blue option, is a later release of the same design whose specifications are not applied to this record; the Galaxy Watch Ultra2 and Galaxy Watch7 are separate models.

SpecificationSamsung Galaxy Watch8 44 mm Bluetooth (SM-L330)Samsung Galaxy Watch Ultra (47 mm, 2024)
Release year20252024
Display1.47-inch Super AMOLED, 480 × 480; full-colour Always On Display

Always On Display keeps the watch face visible but shortens battery life; when off, the screen wakes on wrist raise.

Samsung		1.5-inch (37.3 mm) 480 × 480 Super AMOLED; full-colour Always On Display; Sapphire Crystal

Samsung quotes 3,000 nits peak brightness for readability in sunlight. Night Mode faces switch to red tones in the dark.

Samsung
Glass and caseSapphire crystal glass; 43.7 × 46 × 8.6 mm (excluding health sensors)

Sapphire crystal resists scratches better than ordinary glass. The 8.6 mm thickness excludes the sensor bump on the back.

Samsung		—
Processor and memoryExynos W1000 (5-core, 3 nm); 2 GB RAM, 32 GB storage

32 GB of storage is enough to keep music and apps on the watch for phone-free runs.

Samsung		—
Battery and charging435 mAh (typical); WPC-based fast wireless charging

The watch charges only wirelessly; it must align with Samsung’s charging puck, and some wireless chargers may not sit flat because of the band.

Samsung		590 mAh (typical); up to 100 hours in Power Saving and 48 hours in Exercise Power Saving; WPC-based fast wireless charging

In Exercise Power Saving some features, such as network and Bluetooth connections, may be unavailable. Durations come from Samsung’s internal lab tests.

Samsung
SensorsSamsung BioActive Sensor (optical heart rate, electrical heart signal, bioelectrical impedance); temperature, accelerometer, barometer, gyro, geomagnetic, light

The electrical heart signal enables ECG and bioelectrical impedance enables body composition readings. ECG and blood pressure need a Samsung phone and country approval.

Samsung		Samsung BioActive Sensor (Optical Bio-signal sensor + Electrical Heart Signal + Bioelectrical Impedance Analysis), temperature, accelerometer, barometer, gyro, geomagnetic, light sensor

Health features are for general wellness, not diagnosis; some measurements depend on the market and the paired phone.

Samsung
Health featuresAntioxidant Index (carotenoid measurement), Bedtime Guidance, Vascular Load, Running Coach

Antioxidant Index is measured by holding a fingertip on the sensor for about five seconds; Vascular Load needs the watch to be worn to sleep on at least 3 of the last 14 days. These are wellness indicators, not medical diagnoses.

Samsung		—
LocationL1 + L5 dual-frequency GPS (GPS, GLONASS, BeiDou, Galileo)

The L5 band helps reduce route drift caused by reflections among tall buildings and trees.

Samsung		—
ConnectivityBluetooth 5.3, Wi-Fi 2.4 + 5 GHz, NFC; this model has no LTE (Bluetooth)

On the Bluetooth model calls and notifications work while connected to the phone; NFC contactless payments depend on country and bank.

Samsung		LTE, Bluetooth 5.3, Wi‑Fi 2.4+5 GHz, NFC, GPS (L1+L5) / Glonass / Beidou / Galileo

L1+L5 dual-frequency GPS uses two satellite signals to improve location accuracy among tall buildings and trees.

Samsung
Durability5ATM, IP68, MIL-STD-810H

5ATM means water resistance suitable for swimming, not diving or high-speed water sports. MIL-STD-810H refers to selected environmental tests from the military standard and is no guarantee against impacts.

Samsung		10ATM + IP68, MIL-STD-810H; ocean swimming; operation from −20 to 55 °C; altitude from 500 m below sea level to 9,000 m

10ATM means 10 minutes at 100 metres under ISO 22810; Samsung says the watch is not suitable for high-pressure water or scuba diving. IP68 covers 1.5 metres of fresh water for 30 minutes.

Samsung
Software and assistantOne UI 8 Watch on Wear OS 6; first smartwatch series to ship with Gemini

Gemini can act in Samsung Health, Calendar and Clock via voice; availability varies by device, language and country.

Samsung		—
CompatibilityAndroid 12 or later phones with more than 1.5 GB RAM

It cannot be used with an iPhone.

Samsung		—
Weight and colours34.0 g (without band); Graphite, Silver Samsung—
Case—47.1 × 47.4 × 12.1 mm; 60.5 g; Titanium Grade 4 frame

According to Samsung, Grade 4 titanium is used only on the front and back cover areas of the metal frame; the rest of the frame is a mix of plastic and Grade 2 titanium.

Samsung
Processor—Exynos W1000 (5 core, 3 nm) Samsung
Memory and storage—2 GB memory + 32 GB storage

This figure is for the 2024 launch model; the Galaxy Watch Ultra (2025) version may differ.

Samsung
Operating system—Wear OS 5 (Powered by Samsung) with One UI 6 Watch at launch; One UI 8 Watch update released in July 2025

The One UI 8 Watch update brought Watch8 features such as Running Coach, Vascular Load and Antioxidant Index.

Samsung
Buttons and safety—Two buttons + orange Quick Button; Emergency Siren

The Quick Button can be mapped to start and control workouts; holding it sounds the emergency siren.

Samsung
Phone compatibility—Android 11 or higher with more than 1.5 GB of memory Samsung