This extremely portable, lightweight wireless audio transmitter & receiver is an Perfect wireless audio solution for a wide range of situations and uses. Transmitter mode: wirelessly streams audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth headphones or speakers. Receiver mode: wirelessly streams audio from your Bluetooth-enabled phone, , or computer to your wired stereo, speakers, or headphones. Switch between transmitter and receiver modes with the simple flick of a switch. Effortlessly using advanced Bluetooth technology and 3.5mm audio cable (included). Product : T7 Bluetooth audio receiving and transmitting adapter Product size: 45x20x11mm Input voltage: DC5V Colour: black Material: plastic Package Contents: 1 * Bluetooth 5.0 Audio Transmitter/Receiver Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.