Bluetooth Technology:Wireless 4.0 technology ensures transmitting strong signal in high quality and high speed. Transmission distance is up to 10m / 33ft, free to enjoy wireless music. | BT Audio Transmitter:Can be connected to the audio devices (such as MP3, MP4, TV and PC, etc.) without Bluetooth function, changing them into BT-enabled ones, and making it work with BT-enabled Headset and Speaker. | Powered By USB:With USB plug, you can plug and play this transmitter easily and no need any other driver software, powered by USB, there is also no time limited. | Perfect Sound Effect:Adopts Advanced Bluetooth Module which lets it get high-quality sound effect with A2DP. You can enjoy music, watch movies and play games without disturbing others. | Mini and Portable:Delicate and high-end glossy appearance design, mini and light-weight, very easy to carry and custody.