Portable interactive whiteboards (Indesign) are available for presentations on the move. You then connect the device to your laptop or desktop computer, make your notes or drawings on the whiteboard and download them onto your computer to save, print, fax or email them. You use tailor-made designed pens to write on the whiteboard that use infrared technology to determine where on the whiteboard you are writing. You can touch the board to control the computer mouse cursor. As you move the pen across the whiteboard, displaying the computer image, the mouse cursor follows. Portable Interactive Whiteboard works on almost any surface - an existing whiteboard, a flat wall, even a chalkboard with dry-erase paint, transforms those surface into an interactive whiteboard. No battery is required for USB signal receiver and the unit can be mounted to the ceiling if a permanent solution is required. Working with the extendable pointer E-Pen (Electronic pen) or stylus E-pen, you and your students can explore internet websites, build interactive flipcharts and create more opportunities for discussions and interaction in the classroom. Made of a tiny and lightweight material, the PIWB is easy to transport, even carried by children and ladies. 2. Specification: Signal Receiver Movement Detection Technology : Infrared Active Area (max projection size: 150 inch diagonal Active Area (horizontal angle) : 33 +/- 2 degrees Active Area (vertical angle) : 0-30 degrees Calibration Technology : Infrared Positioning Active Distance (from projection screen) : 1.5 ¡§C 5 m Connectivity Interface : 1 x USB Cable (connection distance up to 40 m) Power Requirement : 4.5 ¡§C 9 W (from USB port) Power Consumption : < 1.5 W Weight : 150 g Dimension : 8.4 x 6.6 x 3.9 (cm) Extendable Pointer : E-Pen (Electronic pen) Movement Detection Technology : LED Light Control Buttons : 1 button ( left and right click of a mouse) Power Requirement : 3 V CR123A x 1 Pen Body Weight : 50g (with battery) Pointer Extendable Length : 32.5-63cm (length); 1cm (diameter) Pointer Weight : 45g. Stylus E-Pen Movement Detection Technology : LED Light Power Requirement : 3 V CR123A x 1 Pen Body Dimension: 13.8cm (length); 2cm (diameter) Weight : 60g (with battery). System Requirements OS Required : Microsoft Windows 98/2000/xp,Vista Processor Type : Intel Pentium or above RAM Size : 128 MB Min Hard Drive Space :30 MB Projection Size Recommended Signal Reception Distance 56 inch 1600mm 68 inch 2100mm 70 inch 2300mm 75 inch 2500mm 85 inch 2800mm 92 inch 3200mm. Carton Package.