The product is mono Bluetooth headset， the main function: to answer the call， reject an incoming call， dial a phone number， the last number redial， function.Product usage mode1， boot: long press 3 seconds， at this time the blue lights flashing， into the working state.2， matching: long press 5 seconds， at this time the blue light flashes alternately， into the matching state.3， shutdown: boot state， long press 3-4 seconds， the red light even flash two， when the blue tooth into the shutdown state.4， Bluetooth phone status， according to the number of functional keys to answer， long press 2 seconds refused to answer the phone， the phone call in the short press to hang up the phone.5， Bluetooth pairing is successful， in the boot state， double-click the multifunctionbutton to redial the last call telephone number.Product parameter descriptionBluetooth version: V3.0+EDR BluetoothOperating frequency: 2402MHz-2480MHzSupport function: HeadsetTransmit power: Class 2Transmission distance: 10 metersCharging socket: NOKIA DC2.0 small mouthCharging time: about 2 hoursTalk time: 4 hoursStandby time: 110 hoursShell color: Black / White / Blue / red nineMain features: single full function control， number redial， voice dialing， answering， refused to answer the phone etc.