Dual Port Design, 3.5MM+ Audio Port,Suitable for more devices, Hifi & Stereo Sounds on the Road, wireless audio transmitter & receiver is an perfect wireless audio, soluton for a wide range of situations and uses Connect 3.5mm/ Cable with your device, Then connect with charging cable, receiver automatically turn on. Open bluetooth,search "BLS-B11",Then connect.After Connected,Enjoy Your Wireless Music Bluetooth 5.0 HD Transmission, Bluetooth 5.0 faster, more compatible, and more stable performance, Built- in Current Sound Isolation Module the trouble of the speaker current sound Wide Compatiblity, Wirelessly stream audio from your Blutooth enabled devices (ike Dot,smartphones,tablets,laptops), No need to worry about no electricity, Comes with a 0.8M charging cable,eeps playing music continuously Connecting with Your Speaker, Enjoy music freely , Wireless Stream Your Playlist During , Connect with your car audio system to enjoy favorite song Product name: Bluetooth adapter Interface: AUX Whether plug and play: plug and play External power supply: no external power supply Transmission rate: 100 (Mbps) Effective working radius: 10 (m) Bluetooth standard: 5.0 Weight: 114g Support: A2DP Battery capacity: no battery, USB5V power supply Accessories: charging cable, 3.5/ audio cable Colour: black Material: ABS Size: 60 x 60 x 20mm Package Contents: 1 x Bluetooth receiver Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.