Operating system HarmonyOS Memory storage capacity 64 GB Special features Activity Tracker, Always On Display, Fall Detection, Multisport Tracker, Touchscreen Battery capacity 540 Connectivity technology Bluetooth About this item Up to 14-Day Battery Life: The battery can last for up to 14 days at most, up to 7 days given typical usage, or up to 5 days with AOD enabled, and up to 25 hours in the outdoor sport mode. Compatible with iOS & Android: HUAWEI WATCH GT 6 is compatible with both iOS and Android for greater ease of use.Wrist circumference: 130–190 mm Wrist-based Cycling Power: Let go of the power metre from now on. Tap the Cycling Virtual Power that monitors the real-time and average power to adjust your workout intensity. Iconic Stylish Design: The 1.47-inch AMOLED display boasts a 5.5% larger screen area for greater immersion.4 The brightness ramps up by 1.5 times at up to 3000 nits, ensuring easy legibility even under sunlight outdoors. Accurate GPS and Heart Rate Tracking: The upgraded HUAWEI Sunflower Positioning System achieves 20% increase in positioning accuracy through enhanced GNSS algorithms and antenna architecture. Sync your heart rate data to the bike computer for seamless analysis at a glance.