l Good designer, can be operated by left/right hand, can match multi-colors * Optical locating, precise & reliable, can moving on different panel * Protecting vibration buffer，ironclad cover made by the multiple materials , can protecting the mouse not be breaked, let its use life to be elongated. * Comfortable operating key, to let your fingers will not tire for operating long times * High sensitivity 800 spots designer. * Rolling axle technical, can rolling freely * can use easy, not need installation System request >> * IBM?or compatible computer * Windows?98, 2000, Me, XP * USB or PS/2 interface Products specification >> Length：114 MM Width：63 MM Height：36 MM key activity parameter >> Maximum resilience：55? g key processing rang：3.5?.3 MM The pulling power of the key?s cover：>1kg Use life：1000 myriad times electricity capability>> Working voltage：+5VDC?0% Working carrent ：+5VDC times<30M key activity parameter >> Maximum resilience：65?0 g Key processing rang：0.8?.2 MM Resolution：800 DPI Key use life：100 myriad times Environment condition >> Use temperature：0癈-45癈 Working store temperature：-30癈-60癈 Working humidity：20%-90% no dew condition