Carbon Neutral: The Apple Watch Ultra 2 is carbon neutral when used with Alpine or Trail Loop. Rugged Design: Water-resistant up to 100m, large Digital Crown, action button that can be customized, 49mm titanium case. Bright Display: An Always-On Retina display with additional complications that can be seen in direct sunlight. Stream, call, text, and navigate without an iPhone thanks to built-in cellular. For athletes: lightweight Trail Loop, dual-frequency GPS, and sophisticated workout metrics. For adventurers: a compass app featuring the tough Alpine Loop and GPS Backtrack. For water sports, use the Depth app, secure Ocean Band, and dive up to 40 meters. Health and safety features include a loud siren, fall/crash detection, a blood oxygen app, and heart health.