特点:1。关键框架采用SUS304#拉丝不锈钢。2.纽扣采用优质锌合金制作,抗破坏能力强。3.具有天然导电硅橡胶耐候、耐腐蚀、抗老化。4.双面PCB带金指,抗氧化。5.LED颜色可定制。 User select: 1. Material: SUS304# brushed stainless steel. 2. Double side PCB with golden finger, resistance to oxidation. 3. 800 DPI photoelectric ball and 1200DPI laser ball are available. 4. Suitable for DOS/Windows95/98/NT/NE/2000/2003/XP/Vista/win7/Linux/Unix/Mac OSX system.