Wireless Comfort & Reliability You’ll appreciate how this wireless optical mouse comfortably fits your h&, your mobile lifestyle, & your pocketbook. Whether you’re sending email or presenting to a class, you can rely on precise optical tracking to scroll, point, & click smoothly. Experience comfortable use in either hand with a mouse that’s slightly longer than more compact mice. Plus, roam up to 15 feet away & retain reliable wireless control of your computer. When it’s time to pack up & go, you can snap the transceiver into its slot to turn off the mouse. Comfort Experience comfortable use in your right or left h&. 2.4-GHz Wireless Enjoy reliable wireless connection with up to 15-foot range. Snap-In Transceiver Snap the transceiver into the slot to turn off the mouse. Optical Technology Benefit from responsive cursor control that takes advantage of 1, 000-dots-per-inch (DPI) tracking. Scroll Wheel Move through documents & webpages quickly. System Requirements Windows-based computer Macintosh-based computer Computer/ Operating System Requires a PC that meets the requirements for & has installed one of these operating systems: Windows 7, Windows Vista, Windows XP (excluding Windows XP 64-bit) Other USB (Universal Serial Bus) only 2 AA alkaline batteries required (included)