机械性能 开关操作力：60±15GF按键操作力：80±20GF 3D按键操作力：170±30GF（鼠标按键中心的垂直力） 开关使用寿命300万次 电缆线长150±1%CM 电气性能 适用机型：IBM/PC/AT/XT/386/486/PENTIUM 操作系统环境：DOS，WIN95/98/2000/ME/XP/NT/vista 工作电压：DC5±5% 工作电流：≤100MA 工作条件 温度：-45oC-50oC 湿度：不高于85%RH All kinds of injection colors or rubber coating colors available adopts optical orientation technology, high accuracy and reliability Easily get online to send and get your Emails. Intelligent Internet functions Zoom in and zoom out functions Buttons life over 1,000,000 times USB and U+P Combo port available Resolution 800DPI Working on any surface except glass surface Compatible with Win 9x/2000/XP/ME/NT/Vista