GPS accuracy and heart rate monitoring: Huawei's advanced Sunflower GPS achieves a 20% increase in GPS accuracy thanks to enhanced GPS algorithms and Huawei's antenna architecture. Sync your heart rate data with your bike computer for instant, seamless analysis. Battery life up to 21 days. Exceptional durability with uptime of up to 21 days. Thanks to the innovative adoption of the high-concentration silicon battery, the energy density increases by 37%. Launch at maximum speed in your adventure with a single charge. Muscle strength on your wrist: Forget the force gauge from now on. The virtual power cycling technology that monitors instantaneous energy and average energy is used to adjust exercise intensity. Iconic design: The 1.45-inch Amuled screen provides 5.5% more screen space for more enjoyment. Increases brightness 1.5 times up to 3000 light units per pixel, ensuring easy reading even under outdoor sunlight. Multidimensional emotional well-being: The watch classifies your feelings into 12 precise emotional states of different sizes, displayed in the form of a variety of flowers. Feed the seeds of your feelings and let them flourish. Compatible with iOS and Android: Huawei's GT 6 Watch is compatible with both iOS and Android for ease of use. Wrist circumference: 14 to 21 cm.