This product a is 2-in-1 BT receiver and transmitter device, which can transmit and receive almost all of the audio freely and easily. Via this product, you can cast the music in your phone to the wired audio equipment, more convenient is that you can also connect to a television, CD player, MP3 or any other audio device to transmit sound to your wireless speakers or headphones.Features:* Adopting BT 4.1+EDR wireless technology, the connection speed is fast and stable, and it is stable and compatible with almost all kinds of mainstream BT devices.* 2-in-1 BT receiver and transmitter device can transmit and receive almost all of the audio freely and easily.* The product supports stereo codec, built-in AEC echo cancellation and ANC noise cancellation circuit.* Plug and play, no need any drivers or apps; multifunctional button and voice prompt make operation easier.* Its small size makes it compact and portable, easy to carry, suitable for various occasions, such as for travel, metro, bus or in office.Specification:Brand Name: MENCOMModel Number: BT006BT: V4.1+EDR, support A2DP, AVRCPTransmission Distance: Up to 10mAudio input & output: 3.5mm Audio PortBattery: 3.7V/180mAh (402030)Color: BlackMain Item Size: Approx. 5.6 * 3.2 * 1.1cm / 2.20 * 1.25 * 0.43inMain Item Weight: Approx. 19g / 0.67ozPackage Size: Approx.  14 * 9 * 2cm / 5.51 * 3.54 * 0.78inPackage Weight: Approx. 67g / 2.36ozPackage List:1 * BT Receiver & Transmitter1 * 3.5mm Audio Cable1 * USB Charging Cable1 * User Manual (English)