Usage Tips:Wireless Audio Adapter: With this wireless audio receiver, you can wirelessly stream your favorite music from smartphones, tablets and laptops to wired speakers, car stereos and headphones. It's perfect for upgrading all wired speakers and old stereos to Bluetooth speakers. Bluetooth 5.1 Audio Receiver: This Bluetooth Audio Receiver uses the latest Bluetooth 5.1 technology to provide faster fer speed and lower latency, eliminate Bluetooth audio latency and provide your old analog amplifiers, home audio systems and vehicles Excellent audio quality. With powerful wireless audio streaming function, enjoy wireless music anytime, anywhere. [Bluetooth Receiver with Multifunctional Encoder]The encoder of this wireless bluetooth adapter can be used to pause or play music, play previous or next music, control music volume. All-in-one, so you can easily control your music directly on your Bluetooth adapter, not your smartphone or other audio source. [Plug and Play]Use the Type-C data cable to connect nearby USB devices to power this bluetooth adapter, super easy to connect bluetooth and use, can automatically reconnect to previously paired devices. Press the 3D button to toggle the 3D surround effect mode on and off. The "3D" key can also be used to switch between wireless mode and TF card mode. material: plastic Color as shown Package Contents: 1 x Bluetooth receiver 1 x 3.5mm aux cable 1 x SPDIF cable 1 x coaxial cable 1 x USB-C charging 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.