Main Features: * 3 buttons * 800dpi *Mini size (97*56*34mm) * Rubber coated on body * With 7 colors LED light *Transparent crystalline design * PS2, USB and USB/PS2 available * More colors available System Requirements: * IBM PC compatible system * Microsoft Windows 9X, NT,Me, 2000, XP * Available PS/2 or USB port. Packing Details: * Each one in a gift box (blister+ paper card) *40pcs in one carton *Carton size: 425*292*457mm * N.W.5.20 KGS (Appr.) * G.W.: 6.50 KGS (Appr.) * 21000pcs/20抍ontainer