Logitech Wireless Mini Mouse M187. Take it wherever you take your laptop—thanks to its pocket-ready, extra-small design. Setup is simple. Just plug in the nano receiver & start using your mouse. Plus, the receiver is small enough to stay in your USB (Universal Serial Bus) port—and stores inside the mouse if you do need to remove it—so there’s no need to worry about losing it. You’ll enjoy the freedom of wireless with more precision & control than your laptop’s touchpad. & you get a mouse you can count on, built with the high quality & reliability that have made Logitech the global leader for mice. • Pocket-size design • Plug-&-forget nano receiver that stays in your laptop • Logitech Advanced 2.4 GHz wireless connectivity • Logitech reliability with a 3-year guarantee" • Mouse • Receiver • 1 AAA battery (pre-installed) • User documentation • 3-year manufacturer’s guarantee & full product support"