ModelBT8106Image/SizeFeatures1.Dual standby,Website:http://www.giftssuppliers.com, may simultaneously connect two phones and the telephone conversation.2. Using the fashionable encoded switch to adjust volume and browse telephone numbers3. Utilizing the newest high-quality BC5 chipset from CSR Company, DSP full duplex calling, CVC echo-eliminating and noise-eliminating technology4.display the numbers of incoming calls, Voice call is supported5. Redial the last number,display the numbers of missed incoming calls6. Built-in high-capacity phone book , store up to 800 telephone numbers;  also browse for the numbers of the last ten incoming calls and select a number to call back7. Supports the private telephone conversation.8. Built-in microphone with high sensitivity and high-power loudspeaker to ensure the talking effectsParameter1.Bluetooth Version:CSR BC052.Voltage supplied by the car charger:DC5 V3.Speaker output :2.5W4.Talking range of the hands-free Mic:0.5~2M5.Receiving range of the Bluetooth device:10 M 6.Echo cancellation technology:CVC technology7.Output of the loudspeaker :1W8.Lithium battey:4.2V 800mHA9.Operating temperatur:0-60 degreePackageColor box :19.6*14.7*5.7cm CTN:59*30.6*41.6cm40pcs/CTN