... Operate by finger or pen Interactive white board specifications:1, Board Dimension :1775mm×1350mm×38mm2, Active Writing area ... Current:130mA±5(USB),500mA±5(Wireless Bluetooth)12,Power Consumption :0.7W(USB),4.5W ... (Wireless bluetooth)13,N.W:32kg14, Working life:>5 ... : you can create white page, black page ,green page,etc. You can extend the page .Zoom in and out: ...