Samsung Galaxy Watch Ultra (47 mm, 2024) / Samsung Galaxy Watch6 (40 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 Watch6 (40 mm): Galaxy Watch6 40 mm: SM-R930 (Bluetooth) and SM-R935 (LTE); Graphite and Gold. The 44 mm Galaxy Watch6 and the Galaxy Watch6 Classic are separate models with different displays, batteries and weights.

SpecificationSamsung Galaxy Watch Ultra (47 mm, 2024)Samsung Galaxy Watch6 (40 mm)
Release year20242023
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		1.3-inch (33.3 mm) 432 × 432 Super AMOLED; full-colour Always On Display

The 44 mm model has a 1.5-inch, 480 × 480 display.

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 W930, dual-core 1.4 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		2 GB memory + 16 GB 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		—
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 4 (Powered by Samsung) with One UI 5 Watch at launch 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 (Optical Heart Rate + Electrical Heart Signal + Bioelectrical Impedance Analysis), temperature, accelerometer, barometer, gyro, geomagnetic, light sensor

ECG and blood pressure work through the Samsung Health Monitor app only in markets where they are approved; blood pressure needs calibration with a cuff every four weeks. Body composition should not be used by people with implanted devices such as pacemakers or during pregnancy.

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 5.3, Wi‑Fi 2.4 + 5 GHz, NFC, GPS/Glonass/Beidou/Galileo; LTE (SM-R935 only) 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 means water resistance to 50 metres for up to 10 minutes; the watch is not suitable for diving or high-pressure water. IP68 covers 1.5 metres of fresh water for 30 minutes.

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 10 or higher with more than 1.5 GB of memory

Some features, such as the camera controller and health measurements, need a Galaxy phone.

Samsung
Glass—Sapphire Crystal Samsung
Battery—300 mAh (typical); up to 40 hours with Always On Display off, up to 30 hours with it on

According to Samsung, an 8-minute quick charge adds about 8 hours of use; charging is WPC-based wireless.

Samsung
Size and weight—38.8 × 40.4 × 9.0 mm; 28.7 g Samsung