Fit for You The headset comes with 2 interchangeable ear buds to best fit your ear size. The special Behind-The-Head wearing style holds your Buds in place during rigorous workout, the headset will stay put even when you are sprinting or jumping.(Note: not fit for above-average size head ) Premium HI-FI Sound, Free Your Music Features behind-ear streamline outlook, GRANDTAU stereo sports headphones can fit firmly into your ear and minimize the outside noise which offers runner an amazing workout experience. Also, Bluetooth 4.1 technology provides much lower power consumption, more stable signal transmission and precise sound production. So users do not need to worry that the battery dies too quickly or suffer from continuously on and off music because of the poor signal in body movement. Hands-Free Calling With built-in microphone, you can answer mobile phone call wirelessly by pressing the button on the ear piece. Designed for Sweat Smooth silicone construction makes it a good pair for anyone who tends to sweat a lot during exercising. You can go do whatever you want to do without worrying about it may get damaged. Specification: Bluetooth specification: V4.1 Operation frequency: 2.402-2.480GHz Supported profile : HFP 1.6,HSP 1.2,A2DP1.2,AVRCP1.0 Chip solution: CSR BC8635 Operation range:UP to 10 metres Talk/Play music Power:13-15mA Standby Power:About 0.5mA Shutdown Leakage Current: Less than 10μA Battery Capacitance:200mAH Battery voltage:3.7V Charge time:About 2 Hour Charge current:150mA
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