Apple Watch Ultra 4 pushes deeper into endurance territory

Apple Watch Ultra 4 will launch September 18 alongside Series 12, continuing Apple's attempt to challenge specialised outdoor and endurance watches. The new model incorporates the same generation of health and AI improvements while extending battery life well beyond Apple's mainstream smartwatch. Reported endurance reaches roughly 50 hours in ordinary use and significantly longer in low-power modes, while high-accuracy GPS and specialised workout tools remain central to the product.

The Ultra line occupies an interesting position because it must satisfy two very different audiences. Traditional Apple users expect applications, messaging, payments and seamless iPhone integration, while serious athletes compare the device with Garmin, Suunto and Polar products based on battery life, GPS accuracy, training load and recovery analysis. Apple's ecosystem remains its biggest advantage, but specialist brands continue to lead in some endurance metrics.

Ultra 4 therefore represents the company's clearest attempt yet to combine both worlds.