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 5.0 and provides fast transmission speed with low latency; the signal is strong. Portable: This wireless receiver transmitter is small, compact, and lightweight, so you can easily carry or store it when going out. Suitable places: This wireless audio adapter is a good choice for use at home, in the office, hotel, car, and so on. Specification: High-concerned Chemical: None Wireless Type: Bluetooth Interface: 3.5mm / AUX 3.5mm / USB Transfer Rate: 300 Mbps Function: Plug and play Bluetooth version: V5.0 Frequency response range: 10Hz - 20kHz Output impedance: 75 Signal to noise ratio: 90dB Distortion + noise: 0.02% Distance: Up to 15m / 50ft (without obstacles) Transmitter Mode: Blue LED light is on Receiver Mode: White LED light is on Color: Black Material: ABS Package Contents: 1 x 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.