Samsung Galaxy Watch Ultra (47 mm, 2024) / Apple Watch Series 10 (46 mm, GPS, aluminium)

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.

Apple Watch Series 10 (46 mm, GPS, aluminium): 46 mm aluminium case, GPS only (no cellular); Jet Black, Rose Gold and Silver. The 42 mm case, GPS + Cellular and titanium versions differ in weight, materials and connectivity.

SpecificationSamsung Galaxy Watch Ultra (47 mm, 2024)Apple Watch Series 10 (46 mm, GPS, aluminium)
Release year20242024
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		LTPO3 OLED Always-On Retina, wide-angle OLED; 416 × 496 pixels, 326 ppi; 1220 mm² display area

Up to 2000 nits and down to 1 nit. Apple says the wide-angle OLED looks up to 40% brighter when viewed at an angle, making the watch easier to read without raising the wrist.

Apple
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		46 mm aluminium; Ion-X front glass

The aluminium version uses Ion-X glass; the titanium versions have sapphire crystal.

Apple
ProcessorExynos W1000 (5 core, 3 nm) 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		—
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		Up to 18 hours normal use, up to 36 hours in Low Power Mode; about 80% in around 30 minutes with fast charging

Fast charging uses the included magnetic fast charger to USB-C cable; the adapter is sold separately.

Apple
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		—
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		—
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		—
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		—
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 Samsung—
Chip and storage—S10 SiP; 64-bit dual-core processor, 4-core Neural Engine; 64 GB storage Apple
Health and motion sensors—Electrical heart sensor; third-generation optical heart sensor; blood oxygen sensor; temperature sensor; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensor

The electrical sensor enables ECG recordings and the optical sensor continuous heart rate. Availability of health features varies by country.

Apple
Water and dust—50 m water resistance (WR50, ISO 22810:2010); IP6X dust; depth gauge and water temperature sensor

Suitable for shallow-water activities such as swimming, not for scuba diving or high-velocity water sports. The depth gauge is for snorkelling down to 6 metres.

Apple
Connectivity and location—Wi-Fi 4 (802.11n); Bluetooth 5.3; second-generation Ultra Wideband; L1 GPS, GLONASS, Galileo, QZSS, BeiDou

This version has no cellular connection, so calls and data away from the phone need Wi-Fi. Location uses only the L1 band; there is no dual-frequency GPS.

Apple
Size and weight—46 × 39 × 9.7 mm; 36.4 g (without band) Apple
Compatibility—iPhone Xs or later with iOS 18 or later (including iPhone SE 2nd generation or later)

An iPhone is required for setup and use; it does not work with Android phones.

Apple