Logitech Design Collection mice give you fresh clicks for your personalized desk setup. Small, comfortable, super responsive, and completely wireless. Click at your desk or on the go for a whole year with one pre-installed battery. 4 COLORFUL DESIGNS: each colorful mouse from the Design Collection gives you a vibrant look to create your personal desk setup PORTABLE + COMFORTABLE: lightweight, portable design with built-in USB storage makes for easy travel to meetings or on-the-go; soft rubber side-grips add extra comfort 10 M WIRELESS RANGE: 10 m of effective operating wireless range (2.4 GHz) give you total freedom and a tidy desk with no wires 12-MONTH BATTERY LIFE: Efficient powersaving technology gives 12 months of battery life on a single, pre-installed AA battery UNIVERSAL COMPATIBILITY: Easy plug-and-play compatibility across many devices and operating systems, including Windows , MacOS, Chrome OS? and Linux . Available USB port required UNIFYING RECEIVER: Unify up to six compatible devices-like keyboards or extra mouse-on one included USB receiver for a perfect wire-free desk setup.