iQbe Writing Tablet 8.5-Inch LCD Writing Board eWriter(Green) Erase your image with the touch of a button - and a friendly flash from the liquid crystal display Sealed 3V watch battery never needs replacing The Boogie Board tablet is an ultra 1/8" thin and is easy to take with you in a purse, scheduler, briefcase or backpack The case and LCD are made from durable plastic materials; Safe for school use and all around the house, office and car The Boogie Board tablet's pressure-sensitive LCD writing surface creates lines of different thickness based on how hard you push - just like paper and pen