| Material and Finish | Titanium case (Grade 5), Colors: Natural, Black |
| Size and Weight | Height: 49 mm
Width: 44 mm
Depth: 12 mm
Display: 422x514 pixels, 1,245 mm² area
Weight: 61.6 g (Natural), 61.8 g (Black)
Fits 130–210 mm wrists |
| Hardware and Buttons | Customisable Action button, Digital Crown, Side button, Microphones, Dual Speakers, Siren, Depth Gauge, Water Temp Sensor, Altimeter, Antennas (GPS + Cellular) |
| Controls | Action button, Digital Crown with haptic feedback, Side button, Double tap & wrist flick gestures, Siri (on-device) |
| Chip | S10 dual-core 64-bit processor, 4-core Neural Engine, 64GB storage |
| Sensors | Electrical heart sensor, 3rd-gen optical heart sensor, Blood Oxygen, Temperature, Compass, Depth gauge, Water temp, Always-on altimeter, High-g accelerometer, Gyroscope, Ambient light |
| Health & Wellness | Blood Oxygen app, ECG, Cycle Tracking, Heart Rate app, High/Low HR alerts, Irregular rhythm alerts, Medications, Mindfulness, Noise, Sleep tracking with stages & score |
| Display | Always-On Retina OLED (LTPO), Sapphire crystal flat screen, 326 ppi, 3,000 nits peak / 1 nit min, Night Mode for Ultra faces |
| Audio | Three-microphone array with noise mitigation, Dual speakers, Siren, Media playback |
| Battery | Up to 42 hrs normal use, 72 hrs Low Power Mode, Fast charging (80% in ~45 mins) |
| Operating System | watchOS (latest version) |
| Workouts | Running, Hiking, Cycling, Swimming, Diving (up to 40 m with dive app), Skiing, Rowing, Yoga, HIIT, Multisport & more |
| Safety | Emergency SOS, Crash Detection, Fall Detection, International calling, Siren, Backtrack GPS |
| Durability | Water resistance: 100 m (swim, snorkel, scuba)
EN13319 certified for diving (40 m)
Dust resistant (IP6X)
MIL-STD 810H tested (altitude, temps, shocks) |
| Connectivity | Dual-frequency GPS (L1+L5), 5G/LTE, Wi-Fi 4 (2.4/5GHz), Bluetooth 5.3, NFC (GymKit), Ultra Wideband (2nd gen) |
| Environmental | 40% recycled content (100% recycled titanium, cobalt, lithium, rare earths, gold plating, tungsten)
100% renewable energy in manufacturing
100% fibre-based packaging |
| Compatibility | Requires iPhone 11 or later (incl. SE 2nd gen+) with iOS 26 or later |
| In the Box | Apple Watch Ultra 3, Strap, 1m USB-C Magnetic Fast Charger Cable |
