TESTED BACTERIA PREVENTION A silver based inorganic antimicrobial agent is added to the exterior parts of the keyboard and mouse to prevent the growth of harmful bacteria and build-up of germs. WIDE ANTIMICROBIAL SPECTRUM The silver ions in the antimicrobial agent have an affect on a wide range of microbes including gram-negative bacteria, gram-positive bacteria, and molds. Additional benefits include Heat Resistance, Sustainability, and Safety. SPILL RESISTANT Rated at IP66, the waterproof design shields against spills, oils, cleaning agents, and much more - making it perfect for areas where dirt, liquids, or germs are a concern. WASHER READY Both the keyboard and mouse are completely washable - adding another layer of protection against possible contamination and providing longer usage. ENHANCED OPTICAL SENSOR The MS530 Mouse has a 1000 DPI Optical Sensor that provides responsive and smooth cursor control, precise tracking, and works on most surfaces.