Video conferencing omnidirectional Echo canceller microphone / speakerphone support USB drive free and support Skype Dial When meetings are free to move around, meeting people when everyone can sit at ease in his place Support windws xp win7 win8 and Apple Computer systems can be used to plug a computer without having to install drivers,but Dial-up keypad, dialing feature is the need to install drivers,now just provide windows OS driver Mic intelligent eliminate noise,and pickup voice range up to 16.4FT(5Meter),Standard USB audio cable 1.5meter High-quality speakers,Adjustable speaker volume;Full duplex conversation, clear sound, built-in omnidirectional microphone Please note: (1) Product applications is  30 square meters of meeting room, speech and the microphone distance  2M; (2) Because the product is omnidirectional microphone, so the meeting room can not have two microphones working at the same time, otherwise there will be howling; (3) The product is for the meeting to talk to people playing the voice, speech clear voice, because the product is not for playing music, so the effect of music in general;