Description: Transmitter and Receiver: 5.3 Transmitter Receiver has TX Rx modes, which can be switched freely.Stable Connection: The Transmitter and Receiver device is built with 5.3 technology, providing fast and stable transmission, the stable connection within 15m, and long standby timeWide Compatibility: Audio Adapter is suitable for various devices on the market, convenient and fast, and adapted to Tv, car audio, home audio systems, headphones, audio music sound systems, PCs, speakers, MP3, MP4, etc.Easy to install: The Transmitter Receiver is easy to install and use, no need to install drivers, just plug it in and use it.Portable: The Audio Transmitter Receiver size is 6cmx2.2cmx1.9cm, compact design, you can easily carry this auxiliary adapter around. Specification: Standard: 5.3 2.4GHz-2.48GHz Transmission Distance: 15m Receiving Distance: 15m Working Time: up to 10 hours Battery Capacity: 180mah Size Chart: 6cmx2.2cmx1.9cm/2.36inchx0.87inchx0.75inch Package Includes: 1 Transmitter and Receiver1 Charging Cable13.5mm Audio Adapter1 Manual Note: Please allow slightly errors due to manual measurement and different monitors.