Kensington MY310 EQ Mouse - A wireless mid-sized mouse made of recycled materials. - Contains 59% post-consumer recycled (PCR) content - Ergonomic design supports all day comfort - Responsive optical sensor with three DPI settings (800/1200/1600) - 2.4 GHz wireless connectivity with 128-bit AES government-grade encryption security - Clickable scroll wheel supports efficient scrolling and navigation - Back and forward navigation buttons for browser related tasks - On/off switch extends life of the battery (batteries last up to 12 months under normal use) - Low battery indicator supports productivity