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.
INCLUDINGS:E=PEN 1PC
BLACK REFILL OF BALL POINT PEN 1PC
BLUE REFILL OF BALL POINT PEN 1PC
3V BUTOON CELL 1PC
AUTO PENCIL NAB 1PC
0.5MM LEAD 1BOX
BOOK LETS 1PC
Interactive whiteboard (easyboard-85) 1. The easyboard uses electromagnetic sensoring technology to provide a unique combination of robust construction with pin-point accuracy. 2. A sleek, cordless electric pen enables the high accuracy with pin-point. Precision achieves 0.05mm. 3. Pet material for board surface, avoiding easy to damage in classroom 4. Powerful intuitive software with great function. Specification: Operation system:win2000/xp/vista/ mac Transmission interface:rs232-usb Precision: 0.05mm Band rate: 19200 Resolution: 8192*8192 Usb power supply: dc5v/100ma Pen battery: 1 pc aaa alkaline battery Power:
