Built with strict standards and guidelines, the HP X3000 Wireless Mouse effortlessly blends sleek, modern design with life-enhancing, advanced features. Rubber side grips: Textured grips feel awesome. Nano receiver: Space-saving 2.4GHz nano receiver. Optical sensor: Optical sensor works on most surfaces. Standard scroll: Scroll wheel zips through web and documents. Support any time: HP 1-year limited warranty included with 24/7 support by phone or online. Mobile mouse: Mobile size travels light. Battery: AA Battery included. Efficient, 12-month battery life. Wireless: Wireless connection sets you free. Actual products may vary from images shown.