Two blue stream lights, one is around your valuable logo , another is around whole mouse key, they are similar to our galaxy. the smaller circle blue light makes the logo more attractive and exalted Light pipe non-slip side rails Anti-scratch bottom Shiny or rubber coated surface Ergonomic ambidextrous design 3D Optical Wheel Mouse * 3 buttons * 800dpi * USB and USB/PS2 available * More colors available * Mouse size 110.70*63.40*37.70mm * IBM PC compatible system * Microsoft Windows 9X, NT,Me, 2000, XP * Available PS/2 or USB port. PACKING: Each one in a gift box (blister+ paper card) - 40pcs in one carton - Carton size: 600*300*460mm - N.W.: 7.50 KGS (Appr.) - G.W.: 9.50 KGS (Appr.) - 14500pcs/20抍ontainer