Apple Watch Ultra 4 GPS + Cellular 49mm Smartwatch | Natural Titanium Case, Translucent Gray Ocean Band - One Size. Advanced Health + Fitness Tracking, 2+ Day Battery

Key Features

• ✓MULTI-DAY BATTERY LIFE—Ultra 4 is a smartwatch with ultramarathon battery stamina,* perfect for runners to go the distance—with up to 45 hours of Max Extended Workout tracking.* And you can fast-charge in just 15 minutes for up to 18 hours of use.*
• ✓STAY CLOSER TO YOUR HEART HEALTH—The most accurate heart rate sensing in a wearable,* Ultra 4 now measures HRV as often as every five minutes for insights on stress and recovery, and background heart rate readings every five seconds.
• ✓A FULL-FEATURED HEALTH TRACKER—Better understand your body with advanced health insights. View your overnight health metrics with the Vitals app and get a daily sleep score,* track your menstrual cycle,* and take readings of your blood oxygen.*