• Environment=Friendly
• No paper, No Chalk 

Use For:

• Painting
• Graffiti
• Practice 
• Calculus

How to use?

• Pull out the pen :
• Writing on the writing area directly with the pen 
• Press the remove button to erase the writing content; Remark: please replace a new battery when remove button without function. 
• How to replace the built-in battery? Loosen the screw, pull out the battery pack to replace new battery.
• in case of losing the pen, please use a lanyard to connect to the pen