Samsung Galaxy Watch Ultra (47 mm, 2024) / Samsung Galaxy Watch5 Pro (45 mm)

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.

Samsung Galaxy Watch5 Pro (45 mm): The Galaxy Watch5 Pro comes in one size (45 mm): SM-R920 (Bluetooth) and SM-R925 (LTE), in Black Titanium and Gray Titanium. The 40/44 mm Galaxy Watch5 is a separate model with a different battery, case material and display size.

SpecificationSamsung Galaxy Watch Ultra (47 mm, 2024)Samsung Galaxy Watch5 Pro (45 mm)
Release year20242022
Display1.5-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		1.4-inch (34.6 mm) 450 × 450 Super AMOLED; full-colour Always On Display

The bezel is raised above the display, which Samsung designs to protect the glass from knocks. There is no rotating bezel; menus are navigated with touch gestures and the buttons.

Samsung
Case47.1 × 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		—
ProcessorExynos W1000 (5 core, 3 nm) SamsungExynos W920, dual-core 1.18 GHz Samsung
Memory and storage2 GB memory + 32 GB storage

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

Samsung		1.5 GB RAM + 16 GB internal storage Samsung
Battery and charging590 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		590 mAh (typical); WPC-based wireless faster charging

Samsung says real battery life varies with network environment and usage patterns. 590 mAh is about 44% larger than the 410 mAh battery in the 44 mm Galaxy Watch5.

Samsung
Operating systemWear 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		Wear OS 3.5 (Powered by Samsung) with One UI Watch 4.5 at launch

Activation requires connecting to an Android phone with Google Mobile Services; it cannot be used with an iPhone.

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

Electrical Heart Signal enables ECG and Bioelectrical Impedance enables body composition estimates; ECG works through the Samsung Health Monitor app only in approved markets.

Samsung
ConnectivityLTE, 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		Bluetooth 5.2, Wi‑Fi 802.11 a/b/g/n 2.4 + 5 GHz, NFC, GPS/Glonass/Beidou/Galileo; LTE (LTE model only)

The LTE model can make calls and use data without the phone nearby; support depends on the carrier.

Samsung
Durability10ATM + 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		5ATM + IP68 / MIL-STD-810H

5ATM covers surface water use such as swimming, not diving or high-pressure water. MIL-STD-810H is the US military standard for environmental test methods.

Samsung
Buttons and safetyTwo 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 compatibilityAndroid 11 or higher with more than 1.5 GB of memory SamsungAndroid 8.0 or higher with more than 1.5 GB of RAM Samsung
Glass and case—Sapphire Crystal; titanium case with D-Buckle Sport Band

The D-buckle band folds open; because the watch cannot lie flat, it is charged on its side on the Samsung charger.

Samsung
Size and weight—45.4 × 45.4 × 10.5 mm; 46.5 g

Dimensions are measured without the health sensors and weight without the strap.

Samsung