APG Fitbit Wireless Activity Smart BraceletFeatures:The first smart bracelet with OLED, recording sports data in daytimeAnd sleeping data at night to guide healthy living lifestyle.Host comes with a standard USB port, special design to charge Through connecting PC and mobile driver.Computers and Android dual-mode synchronous data. Host Syncs via wireless Bluetooth also PC via USB Designed with IP67 for good waterproof performance.Using led lights and vibration motor to remind twice.PedometersBasic pedometers Weight: 18g (unpacked)Three rate IP67Work temperature: Operating temperature Hardware Specifications Charge method: Standard USB chargingDisplay Size 0.49 & 0.91 inch OLED screen Battery : 40mAh polymer battery Standby time: over 4daysSynchronized with the following devices PC terminal: Windows XP,Vista.7+Mobile terminal : iphone4/5/5s, ipod touch5 , ipod 3etc,ios6.0Above and some android 4.2 Bluetooth 4.0+ smart phones to Synchronize data Equipment list : Host wristband snaps manualService commitmentReturning for 7days , 15days replacement , 1 Year warranty