USB Bluetooth Music Receiver Adapter 3.5mm Stereo Audio for iPhone4 4S 5 Mp3Features:Let ordinary speakers instantly become wireless Bluetooth stereo audio music speakersCan be paired to any bluetooth enabled devices， such as mobile phone， laptops， speaker and Bluetooth audio transmitter.Make music in the audio equipment play by wirelessInstructions for use:receive the speaker into usb interface， and the other end connected through the 3.5mm audio cable to the receiver and the LINE-IN interface of speakersOpen the Bluetooth-enabled mobile phone (or computer)， and search the surrounding Bluetooth devices to find a device called dmzmusic and then its' pairing code is 0000， after the pairing is successful， the led light will slow downThen you can select the music via Bluetooth from a cell phone or computer， a great music will play from speakerBluetooth Standard: Bluetooth V4.0+EDR， support A2DP V1.2Power supply: 5V USBOutput: 3.5mm Audio interfaceDistance: about 10mSound output rate: 44.1KHZ and 48KHZ.Specifications:Item size: 55*21*11mmNet weight: 13gPackaging weight: 25gColor: black