APPLE Watch Ultra 4

he Apple Watch Ultra 4 is built for athletes, adventurers and anyone who demands more from their smartwatch. Multi-day battery life, a rugged titanium case and a sapphire crystal display are ready for challenging environments. Precision dual-frequency GPS delivers highly accurate tracking, while the most accurate heart rate sensing in a wearable helps provide deeper insights into performance, stress and recovery. Advanced training features including Pacer, Heart Rate Zones, Custom Workouts and training load help you get more from every session. Plus, Siri AI and Audio Intelligence make it easier to stay connected and get things done throughout the day. 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. Check your readiness for the day - Know when to rest or put yourself to the test. The readiness experience gives you one clear score and can help you determine your capacity to take on the day by analysing your recent activity, vitals and sleep. Ultimate running and workout companion - A superior fitness tracker for distance running, triathlons, mountain biking, strength training and more. Ultra 4 has precision dual-frequency GPS, Pacer, Heart Rate Zones, Custom Workouts, training load and more.