Dimensions: 90 x 51 x 30mm NW: 74g Shell color: pink/green/yellow/blue/golden Shell material: plastic Packing: 1pc/gift box Gift box size: 10 x 6 x 4cm Carton size: 40 x 35 x 30cm/100pcs Carton GW/NW: 10/9kg Mouse resolution: 1000DPI Mouse technology: 3D optical sensor Interface: USB 1.1/2.0, or Ps2 optional Powered by: USB (no battery needed) Connection: Ps2, USB, and combo available System requirements: IBM/Microsoft Windows 95/98/2000/NT/ME/XP/Vista/Mac/Linux Button’s lifespan: >3,000,000 times Operating humidity: 5 to 95% RH Operating temperature: 0 to 40℃ Optical mouse 5 fresh colors available Blue LED light inside Go forward and back function use for internet or files browse