LED Scrolling Message Programmable Pen - Promotional Pen

1) LED Scrolling Message Programmable Pen
2) Four messages and 16 letters in every message can be displayed by 9 ed lights in top of the pen
3) Messages can be changed freely by pressing the three buttons
4) Four AG13 (LR44) batteries required
5) Blister card packing
6) First message can be fixed and not erasable for promotional purpose
7) China / USA patent availiable