1.Brand new and high quality.2.Compact and mini-sized design，easy to take along with.3.Built in microphone， supports handsfree function.4.Enable you to enjoy music and voice in the Bluetooth-enabled multimediaor music player wirelessly with a companion Bluetooth Stereo headset.Specifications:1.Size:About 6cm x 2cm x 0.8cm2.Color: White.3.Support Bluetooth V2.0.4.Bluetooth Specification: V1.2.5.Supported profiles: A2DP， AVRCP.6.The receiver distance: About 10m (Without Block)Instructions for Use:1.Insert the receiver into the speaker’s USB interface.2.Open the Bluetooth enabled mobile phone (or computer)， and search the surrounding bluetooth devices to find a device called BT-DONGLE and then its' pairing code is 0000(if asked)，after the pairing is successful， the led light will slow down.3.Then you can select the music via Bluetooth from a cell phone or computer， a great music will play from speaker.Package Included:1 x USB Bluetooth Music Receiver