Samsung Galaxy Watch8 44 mm Bluetooth (SM-L330) / Apple Watch Ultra 2

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.

Apple Watch Ultra 2: Apple Watch Ultra 2, 49 mm titanium case, GPS + Cellular; natural (2023) and black titanium added in 2024. Band options (Alpine Loop, Trail Loop, Ocean Band, Titanium Milanese Loop) vary by size. The Apple Watch Ultra (2022) and Ultra 3 (2025) are separate models.

Specification	Samsung Galaxy Watch8 44 mm Bluetooth (SM-L330)	Apple Watch Ultra 2
Release year	2025	2023
Display	1.47-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	Always-On Retina LTPO2 OLED; 410 × 502 pixels, 326 ppi; 1,185 mm² display area Brightness goes up to 3,000 nits and down to 1 nit in the dark. LTPO2 lowers the refresh rate to reduce battery use in always-on mode. Apple
Glass and case	Sapphire 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 memory	Exynos 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 charging	435 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	Up to 36 hours in normal use and 72 hours in Low Power Mode; fast charge to 80% in about 1 hour; built-in lithium-ion The box includes a 1 m magnetic fast charger to USB-C cable; no adapter. Apple
Sensors	Samsung 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	Electrical heart sensor; third-generation optical heart sensor; temperature sensor; depth gauge; water temperature sensor; compass; always-on altimeter The electrical sensor runs the ECG app (age 22 and over). The temperature sensor is not for medical use; it supports retrospective ovulation estimates in cycle tracking. Apple
Health features	Antioxidant 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	—
Location	L1 + L5 dual-frequency GPS (GPS, GLONASS, BeiDou, Galileo) The L5 band helps reduce route drift caused by reflections among tall buildings and trees. Samsung	L1 + L5 dual-frequency GPS; GLONASS, Galileo, QZSS, BeiDou The L5 band helps reduce position errors where signals bounce, such as among tall buildings and dense trees. Apple
Connectivity	Bluetooth 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	—
Durability	5ATM, 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	—
Software and assistant	One 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	—
Compatibility	Android 12 or later phones with more than 1.5 GB RAM It cannot be used with an iPhone. Samsung	iPhone Xs or later, or iPhone SE (2nd generation or later), with iOS 18 or later The watch is set up and used only with an iPhone; it does not work with Android phones. Apple
Weight and colours	34.0 g (without band); Graphite, Silver Samsung	—
Case	—	49 mm, Grade 5 titanium; natural or black; 49 × 44 × 12 mm Weight is 61.4 g in natural and 61.8 g in black. Fits 130–210 mm wrists. Apple
Glass	—	Flat sapphire crystal front Apple
Chip and storage	—	S9 SiP (64-bit dual-core processor, 4-core Neural Engine); 64 GB The S9 SiP can process Siri requests on the device and supports the double tap gesture (tapping thumb and index finger together twice). Apple
Diving and durability	—	100 m water resistance under ISO 22810:2010 (WR100); recreational scuba diving to 40 m under EN13319; IP6X under IEC 60529; MIL-STD 810H testing The depth gauge is accurate to ±1 m; Apple advises against diving below 40 m. The MIL-STD 810H tests cover altitude, temperature shock, freeze/thaw, shock and vibration. Apple
Cellular and wireless	—	4G LTE and UMTS; Wi-Fi 4 (802.11n); Bluetooth 5.3; second-generation Ultra Wideband chip Cellular use needs a carrier plan. Ultra Wideband enables precision finding of an iPhone; availability depends on the country. Apple
Controls and safety	—	Customisable Action button; Digital Crown with haptic feedback; siren; Emergency SOS, fall and crash detection The Action button is also used for Precision Start, beginning a workout recording at the exact start. The siren sounds a loud alert to call for help. Apple
Operating conditions	—	On wrist –20 to 55 °C; diving 0–40 °C; altitude –500 to 9,000 m Apple