The Apple Watch Ultra 49mm combines rugged durability with advanced health and fitness tracking. Built for extreme conditions, its titanium case and sapphire crystal withstand demanding environments while delivering precise GPS navigation, all-day battery life, and comprehensive workout modes. Features include blood oxygen monitoring, ECG, temperature sensing, and water resistance to 100 meters. The always-on Retina display remains visible in bright sunlight, and the Action button provides quick access to your most-used functions. Seamlessly integrates with iPhone for calls, messages, and Apple services.