Large screen LCD control user demonstration The dual echo/noise abatement technology, for high quality audio toneOutside microphone foldaway frame design for communication voice more clear and  smooth. Support voice activated dialingVolume controlLow voltage alarm(red indicator flash) The Bluetooth will disconnect when use in out of range but will connect it again when use in the cover area.Reject call and mute function(microphone on/off) Caller ID functionSearch the number dialed, Answered, and Missed and redial the number  you want.With earphone jackRechargeable 1100mAh li-ion battery

Technical Specification:

Bluetooth V2.0+EDRSize: 92X 78 X 22 mmChips CSR BC4-AudioWireless frequency2402MHZ2481MHZ  Transmitted powerClass 2(MAX 4dBm)Received Sensitivity-80dBmCharging power sourcing 5V DCWorking voltage4.2VBattery: Rechargeable Li-ion battery 1100mAhCharging time: about 200 minutesTalking time: 8 hoursStandby time: 200 hoursOperating range: 10 meters