The watch supports wireless charging and can work for two weeks for light use after being fully charged. You can use a HUAWEI phone to reversely charge it when no charger is available. The HUAWEI WATCH GT Series is designed for professional fitness and health management. The watch features a long battery life, runs HarmonyOS, comes with a lightweight app store, and offers a distributed easy travel and convenient lifestyle in all scenarios. Thanks to the improvements made to heart rate measurement hardware and GPS hardware as well as optimizations to algorithms, the accuracy of heart rate measurements and GPS positioning for professional workouts has increased greatly. For example, the accuracy of heart rate measurements has reached 5 bpm during workouts such as interval running and marathon events, the accurate route positioning is able to locate a single running track, and the real-time pace accuracy and distance accuracy have reached industry-leading levels. The watch supports GNSS positioning and provides multiple professional workout modes, such as running, cycling, swimming, triathlon, mountain hiking, and trail running. A variety of workout modes are available for your customization. The watch can record a variety of professional workout data, such as duration, distance covered, calories burnt, cadence, stride, heart rate zone, aerobic training stress, anaerobic training stress, VO2Max, and recovery time, to make exercising more scientific. After Outdoor run mode is enabled for a period of time, the watch calculates and informs you of your current physical status, so that you can adjust your workout strategy in a timely manner to avoid injuries. It's the difference between your peak heart rate during exercise and your heart rate soon after you stop. The speed and degree of heart rate recovery after exercise can be used to measure adaptability to a training load and physical fitness.