... 5, Operate by finger or pen Interactive white board specifications:1, Board Dimension :1775mm×1350mm×38mm2, Active Writing area: ... you can choose three kinds of screen shadow:: centre, left--right ,up and down Teaching resource :Abundant teaching resources ... holderOne USB cable5 meters,30 meters (optional)Accessory boxCDTM board suite softwareUser manual (PDF) MaterialUser manual,certification,guarantee ...