1,video conference system 2,auto focus 3,VIDEO/S-VIDEO output 4,The working-table can rotate ... 180 degree 5,Image freeze ModelAV-2800TLensF=1.6~3.7mm, f=3.9~85.8mmCamera scopeMAX:280*220mmEffective pixel800,000Zoom22 optical ... *2, bottom light:LEDClose dimension460mm*310mm*100mmweight3.5kg Video conference system, visualizer, digital visual presentation