HYPERFAST SCROLLING - Fly through long documents and web pages with a single movement of the almost friction-free scroll wheel. Or press the scroll wheel and switch to precision mode for more accurate navigation EXTREME COMFORT - This standard size mouse features soft side grips and a handy design. This provides more palm support and better control for long, productive hours Highly precise optical scanning - The optical sensor with adjustable DPI levels (400-4000) allows fast, precise cursor control tailored to your needs and movements on your notebook or computer - without mouse pad SEVEN CUSTOMIZABLE BUTTONS - Customize the seven programmable buttons with Logitech Options software for efficient, task-specific key commands such as backward/forward navigation, copy/paste, music control and more Plug & play convenience - The innovative wired M500s mouse is ready to use: simply connect to a USB port and off you go - no battery is needed