About this product
Meet the Apple Watch Ultra 4 GPS + Cellular, the ultimate smartwatch built for the extremes. Housed in a lightweight, rugged black titanium case and paired with a secure burgundy Alpine Loop (M), this 49mm wearable is engineered for endurance athletes and adventurers. It boasts an ultramarathon-grade battery with 2+ days of life and up to 45 hours of Max Extended Workout tracking. Experience the most accurate heart rate sensing in a wearable, with HRV measurements every five minutes and background heart rate every five seconds. Advanced health insights from the Vitals app, a daily Readiness Score, and blood oxygen monitoring empower you to optimize your training and recovery. Precision dual-frequency GPS ensures unmatched route accuracy, while built-in satellite communications enable emergency texting from anywhere. Safety is paramount with automatic fall and crash detection. With cellular connectivity, stay connected to calls, texts, and music without your iPhone. Featuring Siri AI for natural conversations and a durable design ready for any challenge, the Apple Watch Ultra 4 is your indispensable companion for pushing beyond limits.