Back light compensation, audio, lens, 8 Channel, AGC, built in microphone, real time, high resolution, isolation transformer, playback, housing, good quality performance, Security Products, Building Apparatus ...

But also can used as microphone Music Optical Mouse 1. Less volume, which will make you comfortable. 2. It can be not only used as a mouse but also can be a very good speaker 2.1 speaker 2.1 Channel speaker, one woofer & two satellite Exterior connecting write, Media Players, Electronic Batteries ...

Uhf Rechargeable Wireless Microphone, Dual Channel Wireless Microphone, Vhf Echo Wireles Microphone, Echo Rechargeable Wireless Microphone, Karaoke Vocal Dynamic Microphone, Karaoke Vocal Dynamic Microphone, Tymine Uhf Metal Karaoke Wireless Microphone, Tymine Four Channel Karaoke Wireless Microphone, Microphones ...