Connect the 3.5mm audio cable to Car Bluetooth Music Receiver's earphone jack with another head of audio cable to be plugged in home stereo's audio input jack; In the status of power off press the middle button about 5 seconds to turn it on and the blue LED lamp will flicker until it enter pairing mode and then release the button which means the device starts to work normally; After it enters pairing mode enable the Bluetooth function for the devices such as smart phone IPHONE IPAD Bluetooth PC and any other digital products with Bluetooth function. Search Bluetooth devices to find link and connect it. Password input for pairing is needed. After successful pairing the blue LED lamp will continue to bright which means it has been connected already. Then we can play music by player. According to your favor you can choose the music or adjust the volume by short or long press the side button. When the call comes short press the middle button to answer the calling or long press the middle button about 2 seconds to refuse it. Double click the middle button you can dial the last call number. Short press middle button to play or stop long press the middle button to turn off the Bluetooth. When the distance between Bluetooth Music Receiver and mobile phone returned to effective distance the paused Bluetooth signal will be re-connected automatically.