Its a very handy note pad and its so easy to use. Just write in the pad using the highlighter that come with the unit and erase after ward with a piece of cloth or any material that is soft and dry that won't scratch the screen.
The Notepad powered by a three double "A" battery with "ON and "OFF" switch. Measuring 225 X 220 X 21 milimeter and weighs 200 grams. Check this out from Gadget 4 All website for only US$19.90