Item name: Wireless Unit
Can be automatically paired N wireless active speakers, only through a bluetooth connection, HIFI sound quality.
Support wired and wireless microphone input, support audio input, USB input,
Transmission distance: 100-200 meters,
*Power Supply:100-220V AC ,DC9V
Signal to Noise Ratio:>85db
Support speaker quantiy:1-Npcs
Weight: 0.5 KG
N active speakers can be connected as follows,more detail please send me email .