Apple Watch Ultra 3 adds built-in satellite communications, multiday battery life, and the largest, brightest Apple Watch display. It delivers advanced metrics, Custom Workouts, dual-frequency GPS, and valuable health insights like hypertension notifications and sleep score. What’s Included: Rugged and Ready to Go: Tough titanium case and sapphire crystal display. Water resistant to 100 m. Bright, Beautiful Display: Large, advanced display readable at wider angles; can be used as a flashlight. Multiday Battery Life: Up to 42 hours of normal use or up to 72 hours in Low Power Mode. Track a workout with full GPS and heart rate for up to 20 hours in Low Power Mode. Ultimate Running & Workout Companion: Precision dual-frequency GPS, Pacer, Heart Rate Zones, Custom Workouts, running power, Workout Buddy, and training load. Safety Features: Detects a hard fall or severe car crash; built-in satellite communications for emergency text when out of cell/Wi‑Fi range. Customizable Action Button. Invaluable Health Insights: Notifications for possible hypertension, irregular rhythm, sleep apnea, or unusually high/low heart rate; sleep score and blood oxygen measurement. The Freedom of Cellular: Call, text, and stream without your iPhone. Trailblazing Bands. Package includes: Case, Band, 1 m Magnetic Charging Cable.