... ,6.Running, walking, cycling, sports, and outdoor enthusiasts:7.It can connect two equipments at the same time8.Vibration reminding ... automatically10,Speaking key, Volum control keys, the music key. Up/down song keysbluetooth sport earbuds Specifications:Bluetooth VersionV4.0+EDR ... 5 hoursInstruction:-Headset needs to charged in the begining, then turn it on and then pair the headset with the phone. ...