Samsung Galaxy Watch Ultra (47 mm, 2024) / Apple Watch Series 9 (45 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 9 (45 mm, GPS, aluminium): 45 mm aluminium case, GPS model; Pink, Midnight, Starlight, Silver and (PRODUCT)RED. The 41 mm, GPS + Cellular and stainless steel (sapphire crystal) versions differ in size and materials.

Specification	Samsung Galaxy Watch Ultra (47 mm, 2024)	Apple Watch Series 9 (45 mm, GPS, aluminium)
Release year	2024	2023
Display	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	Always-On Retina LTPO OLED; up to 2000 nits, as low as 1 nit; 326 ppi LTPO is a panel technology that can lower the refresh rate dramatically, letting the display stay dimly on when the wrist is down. The 1-nit minimum avoids glare in a dark room. Apple
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	—
Battery and charging	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	Up to 18 hours normal use, up to 36 hours in Low Power Mode; fast charge to about 80% in 45 minutes Fast charging requires Apple’s fast-charging cable and a suitable adapter. Apple
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	—
Sensors	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	—
Connectivity	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	—
Durability	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	50 m water resistant (ISO 22810:2010); IP6X dust resistant; Ion-X front glass Suitable for swimming. Ion-X is the strengthened glass used on aluminium cases; steel cases use sapphire crystal. Apple
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	—
Chip	—	S9 SiP; 64-bit dual-core processor, 4-core Neural Engine Apple
Storage	—	64 GB Apple
Controls	—	Digital Crown with haptic feedback, side button, double tap gesture Double tap lets you answer notifications or calls by tapping the thumb and index finger of the watch hand together twice, without touching the screen. Apple
Health sensors	—	Electrical heart sensor, third-generation optical heart sensor, temperature sensing The electrical sensor is for ECG recordings; the optical sensor measures pulse with light. Temperature sensing tracks overnight changes in wrist temperature. Apple
Blood Oxygen (US)	—	On watches sold in the US without the feature, a redesigned version arrives with iOS 18.6.1 and watchOS 11.6.1; the reading is calculated on iPhone The watch collects sensor data, the paired iPhone calculates the value and shows it in the Health app. Watches bought outside the US are not affected. Apple
Other sensors	—	Compass, always-on altimeter, high-g accelerometer, high dynamic range gyroscope, ambient light sensor Apple
Location	—	L1 GPS, GNSS, Galileo and BeiDou It is a single-frequency (L1) receiver; drift in cities can be more likely than with dual-frequency watches. Apple
Wireless	—	Wi-Fi 4 (802.11n), Bluetooth 5.3, second-generation Ultra Wideband Ultra Wideband lets you locate an iPhone 15-family phone with Precision Finding showing direction and distance; availability varies by region. Apple
Size and weight	—	45 × 38 × 10.7 mm; 38.7 g; fits 140–245 mm wrists Apple
Compatibility	—	iPhone XS or later with iOS 17 or later It cannot be used with Android phones. Apple