Apple Watch Ultra 4 / Natural Titanium case with Sand Trail Loop - S/M

Apple Watch Ultra 4 is Apple's sports and adventure watch, built around a 49mm Grade 5 titanium case and flat sapphire crystal. The new S11 chip works with an all-new Health Sensing System to deliver the most accurate heart rate sensing in a wearable, a daily readiness score and more frequent HRV readings. Everyday battery life now stretches to 50 hours, and built-in satellite communications keep you reachable off the grid. Two titanium finishes are offered, natural and black, plus an Apple Watch Hermès Ultra 4 edition.

The Health Sensing System combines a third-generation electrical heart sensor, an always-on optical sensor, a blood oxygen sensor and a temperature sensor. Background heart rate is sampled every five seconds and HRV as often as every five minutes. A daily readiness score weighs your recent activity, vitals and sleep, then tells you whether to recover or go for it. The watch also scores your sleep and can flag signs of sleep apnoea, hypertension and irregular rhythms, alongside ECG, Blood Oxygen and Cycle Tracking apps.

Runners get running power, cadence, Pacer, Race Route, automatic track detection and Heart Rate Zones. Cyclists gain Power Zones with a paired power meter, and swimmers get stroke detection and a SWOLF score. On the trail, the compass, custom waypoints, Backtrack and offline maps keep you oriented, while the depth gauge supports recreational diving to 40 metres.

The case measures 49 by 44 by 12mm and fits 130 to 210mm wrists. Its Always-On Retina display is a 422x514 OLED panel that peaks at 3,000 nits and drops to one nit in Night Mode. A customisable Action button, haptic Digital Crown and side button handle physical control.

Battery life runs to 50 hours of normal use, or 84 hours in Low Power Mode. Outdoor workouts are tracked for up to 18 hours, rising to 25 hours in Extended Workout and 45 hours in Max Extended Workout. Fifteen minutes of charging adds up to 18 hours of use.

Ultra 4 is water resistant to 100 metres, IP6X dust resistant and tested to MIL-STD-810H. Emergency SOS and Find My work over satellite, and Fall Detection, Crash Detection and a 180-metre siren summon help. Every model is cellular, with 5G, dual-frequency GPS and Apple Pay.

Both finishes use Grade 5 titanium made from 100 per cent recycled material and are otherwise identical. Natural titanium weighs 63.0 grams and black titanium 63.1 grams. Trail Loop, Alpine Loop and translucent Ocean Band straps come in new colours.

Siri AI brings personal context and broad world knowledge to your wrist. Audio Intelligence adds Live Rewind, Siri Recap, Sound Recognition and Shazam, all handled in an isolated part of the S11 chip that deletes raw audio immediately. Some of these features arrive in beta later in 2026 and will not be available in the EU.