Easy to use: Simply connect the speaker with our device, immediately turn the speakers in a fashionable Bluetooth wireless speaker Wireless Play: Removing the hassle of wired connection through the wireless connection and transmission, the user can enjoy a high fidelity music anywhere inside the Control wireless. Removing the hassle of wired connection through the wireless connection and transmission, the user can enjoy a high fidelity music anywhere indoor by wireless control. Developed by the standard USB port. LED status displays, low power media remembering. Use compact portable disk for easy carrying. Applications: Car stereo systems, Home Audio System, etc.Product Description The Bluetooth receiver is specially designed for car stereo systems and Home Audio System. And, you can change the traditional car stereo and Home Audio System Bluetooth systems capacity , and linked to the smart phone compatible with Bluetooth, Laptop, Notebook, Tablet PC, etc. Operations: For USB speakers without supply receiver power Bluetooth music port connecting the charger with 5V USB interface, then connect the receiver to the AUX port Bluetooth music through the speaker audio cable included 3.5 mm. For speakers with USB port --- Connect the device directly to the USB port of the speaker, then connect the receiver to the AUX port Bluetooth music through the speaker audio cable included. conditions: Color: white Bluetooth 2.1 + Support A2DP V1.2 Powered by the USB port (5V DC) Transmission speed: 3 ( mbps) Transmission distance: 10 meters Mode Power Supply: USB-POWER Item size: 5.5 x 2.0 x 1.0cm / 2.16 x 0.79 x 0.39in weight: 24 g / 0.87 oz Package List: 3 x USB receiver 3.3mm Bluetooth audio music 3 x audio Cable 3.5mm Only the above package content, other products are not included. Note: Light reflection 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.