SC N4 is a mouse with a ten key pad and a scroll wheel all-in-one.
Features:

Standard asynchronous 10-key keypad
Embedded optical mouse function, offers 3 different modes by pressing a mode switch,
-mouse function only mode,
-key pad function only mode,
-mouse + key pad function modes together

3 buttons and wheel mouse function offers convenient and USB slot saving when using in Notebook.
400 dpi resolution
USB interface

Specifications:
Compatible OS:
Win 98SE/2000/ME/XP
Switch life: 1,000,000 cycle life

Package content:
EG-10 Key Mouse
User Guide