Portable USB Expansion Mic for TEVO-A3000B
2pcs Conference Mircophone
4.7 m cable extension
Speaker volume: 95dB at the most, Microphone sound-pickup diameter: 5 m; 360 degrees full range.
Interface : USB interface; RJ45 EX1; EX2; I/O line in/out; DIP6 interface (A3000)
