Product Description Description: The USB Bluetooth music receiver neither extension line, also no need pull wire, don't need 3.5mm Headset line to transfer and output. Through wireless Bluetooth music transmission to U disk read home audio system, then you can enjoy it, of course, the premise is your speakers must support the U disc playback function. Bluetooth Music Receiver with Bluetooth V2.1 provides the reliable and high-quality sound. In addition, new technology also provides the extra bandwidth for Bluetooth radio, which makes the music Bluetooth receiver can also remember as many as 6 paired devices, even if the user has a plurality of Bluetooth devices, also need no worry appear chaotic situation meanwhile use different equipment. Compact and mini-sized design,easy to take along with. Built in microphone, supports handsfree function. Enable you to enjoy music and voice in the Bluetooth-enabled multimedia or music player wirelessly with a companion Bluetooth Stereo headset. Applicable instructions: 1. Insert the speaker's USB port can become Bluetooth speaker instantly. 2. Suitable for all of the U disk speaker jack.. 3. Bluetooth audio playback, answer the phone function. 4. Key functions: on one / volume down next a / volume plus play / pause to answer the call / hang up the phone function. Specifications: Size: about 6cm x 2cm x 0.8cm Bluetooth Specification: V2.1 Supported profiles: A2DP, AVRCP The receiver distance: about 10m (without Block) Color: Blue Package contents: 1 x USB Bluetooth Audio Music Receiver