Feature: 1.100% 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 multimedia or music player wirelessly with a companion Bluetooth Stereo headset. 5.Bluetooth version: 5.0 Specifications: Size: about 6cm x 2cm x 0.8cm Supported profiles: A2DP, AVRCP 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