100% brand new and high qualityColor: BlackUSB charging intelligent braceletBand Material: TPU CPU: AMICCOM 8105 V4.0BLE Display:0.69 inches OLED (resolution 96x16) Acceleration:3-axis gravity sensorBattery: Polymer rechargeable lithium battery 40 mA Motor: Built for vibrating alert Charging: 5V USB charging plug Waterproof rating:IP57 Using Time: Full of power use for about seven days System parameters Compatibility: Support Android and IOS System Requirements: Android 4.3 and above， more than IOS 7.0， Bluetooth 4.0 Data Synchronization: Bluetooth data synchronized to the mobile client application Data Storage: Save seven days of motion data APP-compatible languages: Simplified Chinese， English Function parameters: Typical functions;Time and date display Sports Health:Personal information setting Motion tracking (counting steps， distance， calories) Polysomnography (sleep time， sleep quality) Fitness Goal Setting:Health information sharing (Android) Alerts Calls to remind (Android) Message alerts (Android)Anti-lost reminder (phone out of range alerts) Smart keys: Exclusive first touch operation Find Mobile Bluetooth self-timer Control music playback Ajustable cable length: 145 to 200mm/5.71" to 7.87"Package including��1Pc x Smart Bracelet with USB charger