This device allows you, for example, to send the sound from your PC to a hifi system or headphones without having to run cables between the two. Transmitter interface to connect to the computer USB 2.0 key type. Receiver audio output interface: 3 x 3.5mm stereo jacks (headphone, front speakers, rear speakers). Proprietary 2.4GHz wireless solution. Very low audio latency (<43ms). Operational range approximately 10 meters. DVD type sound quality 48Khz, 16 bits. Plug and play, no driver or software installation required. Automatic pairing. External power supply provided.