Its functions include USB Flash Drive, laser beam, LED light and so on. It is a very good writing pen alone with those functions for working, especially teaching and presentation. Do you want to be professional person? This is an important and intimated mate of you.

1. Laser Pointer
2. LED Flashlight
3. Writing Pen
4. Built-in Rechargeable Battery 90mAh
5. Battery Charging through USB connection to computer
6. Two extra ball pen leads for refill