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Samsung Galaxy Watch Ultra vs Samsung Galaxy Watch Ultra2

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

SamsungGalaxy Watch UltraSamsungGalaxy Watch Ultra2
Overview
ReleasedJuly 2024August 2026
Display
Case sizes47 mm47 mm
PanelOLEDOLED
Peak brightness3,000 nits5,000 nits
Always-on displayYesYes
Display detailSuper AMOLED with full-colour Always On Display; 1.5-inch (37.3 mm) with 480 x 480 pixels; 16M colours; Night Mode on its own watch facesSuper AMOLED with full-colour Always On Display; 1.52-inch (38.5 mm) with 498 x 498 pixels; 16M colours; 5,000 nits is the localised peak under high ambient light
Screen protectionSapphire CrystalSapphire Crystal
Health and fitness
ECGYesYes
Blood oxygenYesYes
Skin temperatureYesYes
Sleep apnoea alertsYesYes
High blood pressure alertsNoNo
Body compositionYesYes
Fall detectionYesYes
Crash detectionNoNo
GPSDual-band (L1 and L5)Dual-band (L1 and L5)
Water resistance100 m100 m
SensorsSamsung BioActive Sensor (optical bio-signal sensor, electrical heart signal sensor and bioelectrical impedance analysis sensor); temperature sensor; accelerometer; barometer; gyro sensor; geomagnetic sensor; light sensorSamsung BioActive Sensor (optical bio-signal sensor, electrical heart signal sensor and bioelectrical impedance analysis sensor); temperature sensor; accelerometer; barometer; gyro sensor; geomagnetic sensor; light sensor
Health featuresECG with Irregular Heart Rhythm Notification, blood pressure (calibrated against an arm cuff every 4 weeks) and sleep apnoea detection in the Samsung Health Monitor app, which needs a Galaxy phone; AGEs Index; sleep analysis; body composition; heart rate alertsECG with Irregular Heart Rhythm Notification, blood pressure (calibrated against an arm cuff every 4 weeks) and sleep apnoea detection in the Samsung Health Monitor app, which needs a Galaxy phone; Vitals (heart rate, heart rate variability, respiratory rate, skin temperature and blood oxygen during sleep, against a personal baseline); Heart Health Score; Vascular Load; Antioxidant Index; AGEs Index; Energy Score; sleep tracking, Sleep Coaching and Bedtime Guidance; body composition; High Stress Alert; Cycle Tracking; Hearing, with alerts for unsafe noise levels
Fitness featuresMulti-sports tile for triathlons; Functional Threshold Power (FTP) for cycling in 4 minutes; Personalised Heart Rate Zone; Quick Button to start and control workouts; works from 500 m below sea level to 9,000 m altitudeTrail Run with GPX routes, turn-by-turn navigation, Climb Guidance and Water Intake Alarm; Depth app for depth, dive time and water temperature to 40 m; direct connection to cycling power, speed and cadence sensors; Track Back; Running Coach; Fitness Index; Daily Cardio Load; Personalised Heart Rate Zone; Personalised Functional Threshold Power; Strava and iFIT apps
Safety featuresEmergency Siren up to 86 dB, heard up to 180 m away (hold the Quick Button); Emergency SOS; Fall DetectionEmergency SOS (five presses of the home button); Fall Detection; 86 dB siren heard up to 180 m (hold the orange Quick Button for 5 seconds)
Battery and connections
Battery life (maker's claim)Up to 60 hoursUp to 60 hours
In low-power modeUp to 100 hours–
Mobile data optionYesYes
Works withAndroidAndroid
ChipExynos W1000Snapdragon Wear Elite
Storage32 GB64 GB
Battery life detailUp to 60 hours with Always On Display on and up to 80 hours with it off; up to 100 hours in Power Saving; up to 48 hours of outdoor workout with GPS in Exercise Power Saving; 590 mAh typical capacityUp to 60 hours with Always On Display on and up to 80 hours with it off; GPS up to 20 hours and GPX route navigation up to 16 hours with power saving mode (Standard) on during exercise; 800 mAh typical capacity
ChargingFast Charging (WPC-based wireless charging)High-Frequency Fast Charging (WPC-based wireless charging) to 40% in about 30 minutes with the Fast Wireless Charger (EP-OL715) in the box and a 5 V / 2 A PD adapter
ConnectivityLTE with eSIM (4G LTE and 3G); Bluetooth 5.3; Wi-Fi 802.11a/b/g/n at 2.4 GHz and 5 GHz; NFC; L1 + L5 dual-frequency GPS with Glonass, Beidou and Galileo; pairs with Android 11 or later phones with more than 1.5 GB of memoryLTE with eSIM (4G LTE and 3G); Bluetooth 6.0; Wi-Fi 802.11a/b/g/n at 2.4 GHz and 5 GHz; NFC; L1 + L5 dual-frequency GPS with Glonass, Beidou, Galileo and QZSS; pairs with Android 13 or later phones with more than 1.5 GB of memory
Storage2 GB memory; 32 GB storage (21.1 GB available); the Galaxy Watch Ultra (2025), sold from July 2025, has 64 GB (50.0 GB available)2 GB memory; 64 GB storage (49.3 GB available)
Design
Weight (lightest version)60.5 g61.5 g
SoftwareWear OSWear OS
Case materialsGrade 4 titanium on the front and back cover areas of the frame, the rest a mix of plastic and grade 2 titanium; Sapphire Crystal; 10ATM and IP68; MIL-STD-810H; works on the wrist from -20°C to 55°CTitanium case (titanium on the front and back cover areas of the frame, the rest of the frame is plastic and other materials); Sapphire Crystal; 10ATM (100 m, ISO 22810, tested in salt and chlorinated water), IP68 and IP69K; EN13319; MIL-STD-810H; works on the wrist from -20°C to 55°C
Size47.1 x 47.4 x 12.1 mm; 60.5 g (watch body without band)47.4 x 47.1 x 10.7 mm; 61.5 g (watch body without band)
Bands–Marine Band (S/M/L) in the box, with an Air Pocket inner surface; PeakForm Band and Trail Band sold separately
ColoursTitanium Silver, Titanium Gray, Titanium White; the 2025 version adds Titanium BlueTitanium Silver, Titanium Grey
In the box–Galaxy Watch Ultra2, Marine Band, Fast Wireless Charger

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