Apple Watch Ultra 3: Design: Robust 49mm titanium case and a super-bright display (3000 nits). Performance: Fast S10 processor, 64GB memory, highly accurate GPS, and satellite connectivity. Battery: Lasts up to 42 hours (and up to 72 hours in power-saving mode). Health: Tracks heart rate, oxygen levels, sleep apnea alerts, and blood pressure. Sports and Safety: Water-resistant for diving (40 meters), siren, and car crash detection. Color: Titanium Condition: New