Apple Watch Ultra 4 Trail Loop

Apple Watch Ultra 4 with the Trail Loop band - thin and light, with a pull tab for quick adjustments on the run. Sand pairs with Natural titanium, Burgundy with Black.

The 49 mm Grade 5 titanium case comes in two finishes - Natural and Black. The Always-On Retina display with an LTPO3 panel reaches up to 3000 nits, the brightest of any Apple watch, and is protected by flat sapphire crystal. Night Mode turns the watch face red for use in the dark.

The battery lasts for days: up to 50 hours of normal use and up to 84 hours in Low Power Mode. For workouts it gives up to 18 hours outdoors, up to 25 hours in extended mode and up to 45 hours in max extended mode. Fast charging gets you to 80% in about 45 minutes.

Health tracking is handled by the Health Sensing System: a second-generation electrical heart sensor, an always-on optical sensor, a blood oxygen sensor and a temperature sensor. It also has a depth gauge, a water temperature sensor, a compass and an always-on altimeter. The watch alerts you to irregular rhythm, high and low heart rate, sleep apnea and possible hypertension.

It's water resistant to 100 meters and, under the EN13319 standard, suitable for recreational diving to 40 meters. It's tested to MIL-STD 810H for altitude, thermal shock, immersion, icing and vibration. It has a customizable Action button, a siren, three microphones with wind noise reduction and dual speakers. All models are GPS + Cellular.

The warranty for this device lasts 2 years from the date of purchase.