Features: 100% brand new and high quality. Can 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 wireless Instructions 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 speakers Open 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 down Then you can select the music via Bluetooth from a cell phone or computer a great music will play from speaker Specifications: Bluetooth Standard: Bluetooth V2.1+EDR support A2DP V1.2 Power supply: 5V USB Output: 3.5mm Audio interface Distance: about 10m Transmission rate: 3Mbps Shell Color: White Size: 55*20*10mm Net Weight: 27g Package Includes: 1 x USB Bluetooth Audio Music Receiver 1 x 3.5mm Audio Cable