【Update Version Easy and thicker writing and one key to clear】Writing or drawing with the included plastic stylus, compare with previous version, update version are with thicker writing, more easy to view, easy to write.Erase your writing content quickly with simply one press of erase button. 【 Replaceable coin-cell battery】Writing and erasing more than 100,000 times, battery can be replaced with new ones easily when remove button without function, battery type: CR2016 3.0V. 【Kick-stand function】Stylus can be used as a kick-stand to display your written messages to family, friends and co-workers. Built-in stylus dock provides convenient storage for stylus when not in use. 【Ultra light-weight, portable】It is 1/8 inch thin and is easy to take with you anywhere you go. 【 Environmental-Friendly and Multi-Purposes】No paper or chalk needed, not only suitable for kid’s Graffiti, Arithmetic, Drawing and Pictures, also suitable for Shopping lists, To-do, Recipe, even office Memos.