Descriptions: The Bluetooth-compatible Transmitter is specially designed for the Audio Devices (such as MP3, MP4, TV, PC and DVD, etc.) without Bluetooth-compatible function. After connected with them via 3.5mm audio cable or RCA cable, it can transmit the audio files of They to the Bluetooth-enabled Receiver devices (such as, Headset, Speaker, Bluetooth-compatible Receiver, etc.). Features: Bluetooth-compatible 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-compatible 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-compatible 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. Specifications: Bluetooth-compatible Version: 4.0 Transmission Distance: up to 10m (no obstacle) Color: Black Shell material: ABS Main Item Size: 65x26x11mm/2.56x1.02x0.43in Package List: 1 x Bluetooth-compatible Transmitter 1 x 3.5mm Audio Cable 1 x 3.5mm TV AV cable