Usage Tips:Dual modes: This bluetooth-compatible audio adapter features reception mode and transmission mode, meeting your different needs. Wide compatibility: This wireless audio adapter can connect with many kinds of phones, tablets, computers, laptops, , and more. Stable: This wireless audio transmitter receiver supports bluetooth-compatible 5.0 and can provide a fast speed and has low latency, the signal is strong. Portable: This wireless receiver transmitter is small, compact and , so you can easily carry or store it when going out Suitable places: This wireless audio adapter is a good choice to use in a home, office, hotel, car, and so on. Specification: Hign-concerned Chemical:None Wireless Type:bluetooth Interface:3.5mm Transfer Rate:300(Mbps) Function:Plug and play Bluetooth-compatible version: V5.0 + . Interface: /AUX 3.5mm/USB. Frequency response range: 10Hz-20KHz. Output impedance: 75. Signal to noise ratio: 90dB. Distortion + noise: 0.02%. Distance: Up to 15m/50ft(without any obstacles). Transmitter Mode: blue LED light is on Receiver Mode: white LED light is on Colour:black Material:ABS Package Contents: 1 * Audio Adapter 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.