Plug and play. Simply connect to your PC or Mac via USB. The Cleartalk has 3 inbuilt microphones to pickup 360 degree sound, however you can select individual microphones if you only wanted pickup from one direction.
In normal room conditions the Cleartalk can pickup talking from up to a 2 metres in each direction, perfect for small to medium conference tables. Just pop the speaker in the middle of the table and you are all set to audio conference!
Further specs are here.