The sculpted, compact shape of this Logitech MX Anywhere 2 Wireless Mouse provides comfortable clicking & smooth scrolling. Darkfield Laser Technology Logitech's Darkfield tracking technology uses the smallest possible detail to create a micro-road map of the surface you are working on, whether this is a mouse mat, a tray-table on the train, or even on a glass surface in a fancy office, so your get complete precision, no matter where you are. Ergonomically designed The comfortable feel of this mouse is due to the sculpted arch made to fit your h&. What's more, you can pair this advanced mouse with up to three devices & easily switch between them with the touch of the button, thanks to Easy-Switch technology. In addition, this mouse's rechargeable battery lasts up to two months, so you don't have to worry about your mouse running out of charge mid-flow. The Logitech MX Anywhere 2 Wireless Mouse is ideal for flexible working on the go.