Andoer&reg; Mini 3.5mm Bluetooth Stereo Audio Transmitter Wireless Bluetooth A2DP Stereo Music Transmitter Adapter for Mp3 Mp4 CD Player TV PC Connect the Bluetooth Stereo Audio Transmitter to the Audio Devices (Such as Mp3, Mp4, TV and PC, etc) without Bluetooth function via 3.5mm the included audio plug, changing these audio devices into Bluetooth-enabled audio devices, and making it is able to work with Bluetooth-enabled Headset and Speaker. With 3.5mm audio plug, fit for most kinds of audio devices, such as CD Player, TV, MP3, MP4, PC, etc. The Bluetooth Stereo Audio Transmitter changes the audio devices without Bluetooth function into Bluetooth-enabled audio devices, and transmits the audio signal to Bluetooth-enabled device wirelessly. Plug and play, no need installation. Built-in high-performance rechargeable lithium battery, can offer 5~7 hours of work time after fully charged (Charged via USB Cable).