Operating system HarmonyOS Memory storage capacity 64 GB Special features Activity Tracker, Always On Display, Fall Detection, Multisport Tracker, Touchscreen Battery capacity 867 Connectivity technology Bluetooth About this item Up to 21-Day Battery Life : Signature strong endurance with up to 21 days battery life. With the innovative adoption of a high-silicon battery, the energy density surges by 37%. Leave the energy worries behind, and set out to break new records. Compatible with iOS & Android: HUAWEI WATCH GT 6 is compatible with both iOS and Android for greater ease of use.Wrist circumference: 140–210 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. Multi-Dimensional Emotional Wellbeing: The watch categorises your emotions into 12 types of subtle states across dimensions, which are visualised in varied forms of flowers. Nurture your emotional seeds and let them flourish.