How to use 1.Stick it in your car,the position you can choose as you like.Connect it to the car charger by the USB port 2.Turn on the Bluetooth function in your cellphone and search for the device name"LinK-BT4823" 3.Click the connect and pair to it(If need a password,please input:0000) 4.If pairing successfully,you can enjoy the music wireless and hands-free calling
Specification: Bluetooth version:V 4.1 + EDR Bluetooth Frequency Range:2.402-2.480GHz Effective Range :Up to 10 meters (30 feet) Bluetooth Profile Support :A2DP,SBC, MP3 and AAC,CLASS 2
Package Detail 1x Smof Bluetooth 4.1 Receiver 1x User Manual