The Apple Watch Ultra 2 GPS Cellular is resistant and capable of exceeding limits. It is designed to deliver unparalleled performance. The lightweight titanium case is sturdy and corrosion-resistant, and raised to protect the sapphire glass from impacts on the edges. Powered by the new S9 SiP, the Retina Always-On display has 3000 nits at its peak, making it even more readable in intense sunlight. In low-light situations, it dims to 1 nit. Night mode is automatically activated in the dark. Box contents: Apple Watch Ultra 2 GPS Cellular Loop Alpine Strap: S (130-160 mm), M (145-190 mm), L (165-210 mm) Magnetic charging cable to USB-C for Apple Watch (1m) Features: Large and bright Apple Watch display Powered by the new S9 SiP, the Retina Always-On display has 3000 nits at its peak, making it even more readable in intense sunlight. In low-light situations, it dims to 1 nit. Night mode is automatically activated in the dark. The large display allows you to customize the view to adapt to almost any activity. And the new watch face shows dynamic information such as altitude, depth, or seconds on the outer edges. Ready for action The customizable action button gives you quick and physical control over various functions. It can do things like start a workout, mark a waypoint on the compass, or start a dive. Like you, it's full of potential. Everything in its place Apple Watch Ultra 2, an essential and versatile tool that fits on your wrist, brings incredible capability in a surprisingly compact space. GPS Antenna The dual-frequency precision GPS provides an accurate location for calculating distance, pace, and route maps. Dual Speakers A second speaker increases audio volume for calls and Siri. Siren Emits an 86-decibel sound to attract help. It can be heard up to 180 meters away. Side Button Use it to access security functions. Press and hold it to make an emergency call, retrieve your Medical ID, or access the Siren. It is slightly raised from the case for use with gloves. Set of three microphones In windy environments, an adaptive algorithm selects the best microphone for audio. Machine learning filters noise for optimal voice clarity. Depth Gauge Provides real-time measurements of underwater depth up to 40 meters, along with water temperature readings. Digital Crown Its large diameter and thick ridges make it easy to use. Multi-day battery When you're on the second day of a backpacking trip, in the final stage of a triathlon, or diving along a coral reef, the last thing you want to think about is running out of battery. With Apple Watch Ultra 2, you can face almost anything and still have plenty of power. Powered by the innovative S9 SiP Apple's custom silicon makes Apple Watch Ultra 2 more capable, user-friendly, and fast. The dual-core CPU has 5.6 billion transistors, 60 percent more than the previous generation. A new four-core neural engine processes machine learning tasks up to twice as fast. There has never been anything like it in a smartwatch, enabling new advanced features like Siri on the device, Precision Finding for iPhone, and a new magical way to control your Apple Watch with a simple double-tap gesture. Magic at your fingertips Interact quickly and easily with your Apple Watch Ultra 2 without touching the screen. Tap twice with your index finger and thumb to answer calls, pause and resume timers, and more. It makes everyday actions even easier, especially in demanding situations where you don't have an extra hand to spare. More views, more motivation Apple Watch Ultra 2 now connects to cycling accessories like power meters via Bluetooth. For a better view of your performance during a ride, start a cycling workout from your watch, and it will automatically appear as a Live Activity on your iPhone, which can be attached to your handlebars with optional accessories. Heart Rate Zones Quickly check your intensity level. Training zones are automatically calculated and customized using your health data, or you can create them manually. Multi-Sport Training Combine running, cycling, or swimming in a single workout. The Workout app will automatically recognize when you switch activities. Fitness App Support Apple Watch Ultra 2 supports custom training APIs, so apps like TrainingPeaks can allow you to import your scheduled workouts into the Workout app. Custom Workouts Set time and distance goals for each interval of your workout. And add warm-ups, cool-downs, and recovery intervals. Advanced Running Metrics Measure stride length, ground contact time, and vertical oscillation. Train for specific time goals with Pacer.