Yet the current different type mingles the pedestal mingles surely handset headphone in immediate future may dispense with to raise joins can another may outside joins earphone secret telephony may select and provide the frame User Manual 1.Plug the device into the cigarette light socket and Led will light on to indicate the system power is switch on. 2.Squeze the voice collector clip on the cellular phone?ˉs earphone, (the clip must aim at the earphone) 3.Put the cell phone on the cushion (to refrain from the noise caused by the electromagnetic wave ,the cellular phone should away from the hands free kits 300mm least) 4.The signal indicator will flash when a calling signal received. 5.Push the OK button on the cellular phone to answer the call. 6.You can use the volume control function to adjust the qualification of communication. G.W.： 18.5KG Meas： 76.5*40*51CM　 Qty： 100PCS/CTN