BT4823 New Arrival H&-Free bluetooth Receiver For Vehicle Description :1. Before using the receiver for the first time, you must pair it with your phone.2. Connect the receiver to the car charger, plug the car charger into the cigarette socket, the blue indicator light will start to flash quickly.3. Turn on the bluetooth function of your phone.4. Search for the bluetooth devices & select Link-BT48235. Enter the code 0000if needed.6. If pairing is successful, the blue light will be bright constantly.7. Auto connect function: The receiver will connect to the last connected phone automatically when it turns on. Please make sure enable the bluetooth function of your phone before turn on the receiver. Specification :bluetooth version V4.1+EDRFrequency range 2.4 GHZOutput power category Class 2bluetooth Mold HFP/HSP/A2DP/AVRCPbluetooth rangeup tp 30 feet Electric voltage DC 3.7V--5.0 V Working current DC 5V/8-15m A Package included :1 X bluetooth receiver 1 X USB (Universal Serial Bus) Car Charger 1 X User manual Details pictures: