5 D Programable optical mouse + 1pcs DPI control button ; with very fashionable aspect ; Accord with the International panton code ; Unique anticorrosive painting treating technology ; 1.A unique and smart design of optical mouse for game player 2.It helps the player to obtained the real-time Higher resolution . whenever they need and Built-in DPI indicator light                                                                          3.Default setting three grade DPI ,from 400 , 800 , 1600 and up  to higher   4.Switch/MTBF：70±10of/up to 1kk times 5.Connector USB basis and support Plug and Play 6.Compatible with windows95,98,Me,NT 4.0,2000,XP Mac OS 8.5~9.X