Logitech M190 Full-Size Wireless MouseLogitech M190 is a large-size wireless mouse with a contoured design that follows the natural curve of medium to large hands. All-day comfort thanks to the arched palm support and special button scooping for ideal finger placement.Youll work wirelessly and move freely from up to 10 meters away with virtually no delays or dropouts. No cable means no clutter on your desk. And 18-month battery life means you can work worry-free thanks to the power-saving mode which automatically kicks in when youre not using the mouse.Youll get great quality navigation with precision tracking and line-by-line scrolling at an affordable price.Wireless range and battery life may vary based on user environmental and computing conditions.LARGE-SIZE COMFORTOptimal comfort for either hand with a contoured shape designed to follow the natural curve of large hands. Buttons scooping guides fingers into ideal placement.LAG-FREE WIRELESS CONNECTIONWork wirelessly and move freely from up to 10 meters away with virtually no delays or dropouts. No cable means no clutter on your desk and easy transportingUNCOMPROMISED QUALITYGet great quality with precision tracking and accurate line-by-line scrolling at an affordable price. Easier navigation with no annoying missed clicksBUILT TO LASTDurable and reliable quality from the #1 world leader in mice and keyboards. An everyday computer mouse you can depend on for a longer time18-MONTH BATTERY LIFEEnjoy months of worry-free usage. Power-saving mode automatically kicks in when youre not using the mouse to save power. AA Battery Included