You can aslo used it as a LED falshlight.PDA Stylist tip can be used in many electronic devises. Ball Point Pen that writes super smooth.

This versatile 4 in 1 invisible pen, LED light, and laser pointer combination is ideal for company presentations, school, home and so much more. The ultra-bright laser dot is easily viewed even against high-lumen projections. Combination design offers a laser pointer and LED light at one end, and a ballpoint pen at the other.  

Main Function:
* Laser pointer
* PDA or invisible pen
* Writing Ball Pen
* Color available:Silver /Blue /Black(Ship colors available)

Specification:
* Two s design for invisible pen and red laser beam
* Battery: 3 X AG3 battery
* Size: *8 x 4 x 2cm
* Weight: 0.*5kg

Application:
* Emergency Light
* Security Marking