The Apple Watch Ultra 4 pairs a 49mm titanium case with a 3000 nit Always-On Retina display, satellite communication, 100 metre water resistance and 50 hours of battery.

The Apple Watch Ultra 4 is built from Grade 5 titanium in a 49mm case measuring 49 x 44 x 12mm and weighing 63 grams, offered in Natural and Black. Its Always-On Retina display uses wide-angle OLEDs with LTPO3 across 1245 square millimetres at 422 x 514 and 326 pixels per inch, reaching 3000 nits at peak and dimming to a single nit, under flat sapphire crystal. A Night Mode is available on select watch faces for low-light use. Inside runs the S11 chip with a dual-core 64-bit processor, a 4-core Neural Engine and 64GB of storage.

Where the Ultra separates itself is endurance and safety. Battery life reaches 50 hours of normal use and 84 hours in Low Power Mode, with 18 hours of outdoor workout tracking, 25 hours in extended workout mode and up to 45 hours at maximum. Fast charging reaches 80% in about 45 minutes, and a 15 minute charge returns 18 hours of normal use. Satellite communications cover Emergency SOS, Messages and Find My when you are beyond cellular range, alongside a siren, a flashlight, Fall Detection, Crash Detection, Backtrack and Check In.

Water resistance runs to 100 metres under ISO 22810:2010 for swimming, snorkelling, scuba and high-speed water sports, with an EN13319 rating for recreational scuba diving to 40 metres at one metre of accuracy, an IP6X dust rating and MIL-STD 810H testing for altitude, temperature, immersion, shock and vibration. Health tracking covers the Readiness app, the Vitals app, the ECG app, the Blood Oxygen app, Recovery HRV, irregular rhythm and hypertension notifications, Advanced Cycle Tracking and a Sleep app with sleep stages and sleep apnea notifications. Navigation uses precision dual-frequency GPS, and the watch carries a three-microphone array with beamforming and wind noise mitigation, dual speakers, a customisable Action button and Siri powered by Apple Intelligence.

Apple Watch Ultra 4 Key Features:

• 49mm Grade 5 titanium case - in Natural or Black, 12mm deep and 63 grams, fitting wrists from 130 to 210mm.
• Always-On Retina display at 3000 nits - 422 x 514 across 1245 square millimetres under flat sapphire crystal, with a Night Mode on select watch faces.
• Up to 50 hours of normal use and 84 hours in Low Power Mode - with 18 hours of outdoor workout tracking and up to 45 hours in maximum extended workout mode.
• Satellite communications - Emergency SOS, Messages and Find My over satellite when there is no cellular signal, included for two years with activation.
• 100 metre water resistance with EN13319 scuba rating to 40 metres - plus a depth gauge, a water temperature sensor and an IP6X dust rating.
• MIL-STD 810H tested - for altitude, high and low temperature, immersion, shock and vibration.
• S11 chip with a 4-core Neural Engine - Apple's most powerful wearable chip, with 64GB of storage.
• Readiness app, ECG and Blood Oxygen - alongside Recovery HRV, irregular rhythm notifications, hypertension notifications and sleep apnea notifications.
• Built-in siren and flashlight - with Fall Detection, Crash Detection, Backtrack and Check In for safety in the field.
• Precision dual-frequency GPS - covering GPS, Galileo, QZSS and BeiDou for accurate tracking in cities and canyons.
• Customisable Action button and Digital Crown with haptic feedback - plus single tap, double tap and wrist flick gestures.
• Three-microphone array and dual speakers - with beamforming and wind noise mitigation for calls outdoors.
• Ten band choices across four families - Alpine Loop, Trail Loop and Ocean Band each in three colours, plus the Titanium Milanese Loop.

Connectivity & Compatibility: