Sending and receiving: Bluetooth 5.2 audio receiving/sending two in one adapter, TX+ transmission two in one design, one button switching between different devices to meet your different needs. High fidelity audio output interface: 3.5mm audio interface+TYPE-C interface, facilitating the use of audio devices with different power amplifiers. More general TYPE-C interface, two in one data billing. High capacity battery, 20 hours of continuous playback, no battery life anxiety. Built in antenna design, high sensitivity, strong signal penetration, 20 long distance transmission. Different batches, the product may have color difference, does not affect Colour:Silver Gray Material:ABS+aluminum alloy Size:79 x 52 x 16mm Package Contents: 1 x Bluetooth transceiver 1 x USB power cable 1 x 3.5mm audio cable 1 x RCA audio conversion cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.