anti-moypia e-pen( including pencil,ballpoint pen,bosh)

الوصف

Children's writing poise is so important that it is the only fact that decide children myopia or not, and humpback too. This electric pen is the right instrument that keeps you a right poise to prevent you from myopia and humpback. It is equipped with an infrared inductor and CMOS chip. When the power is on, the infrared inductor will provide you an infrared fence. So when your head touch the fence, the CMOS chip will work and draw back the nab, then you can not write. That is, this pen is only work when your head is enough far away to the desk. What's more, this pen is designed with 3 types of cartridge, pencil, ball point pen and bosh. One equals three, fully meet your requirements. for details pls visit 3wdot goodsupply dot com dot cn