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Chipset: RTL8762C Bluetooth Version: BT 5.0 Compatible OS: Android 6.0 or above; iOS 11.0 or above Operating Mode: Full Touch Screen APP Name: Haylou Fun Watch Language: Chinese, English, Korean, German, Italian, Japanese, Portuguese, Spanish (follow the phone language) Waterproof: IP68 Sensor: Motion Sensor, Heart Rate Sensor, Blood Oxygen Sensor Screen Size: 1.69 inch Screen Type: TFT Screen Resolution: 240*280 Battery Capacity: 220mAh Battery Using time: about 9 days Standby time: about 20 days Charging Time: about 2.5 hours Charging Type: Magnetic charging Material Band Material: Silicone Dimension: about 45.7*35.6*11.7m Band Width: 22mm Product Weight: about 42g