. Succeed in a multi-device world with M720 Triathlon Mouse. You\'ll power through tasks by switching seamlessly between 3 computers and fly through documents and web pages with hyper-fast scrolling. Boosted efficiency means this Bluetooth and Unifying mouse lasts for 24 months on a single AA battery. All that in a full-size shape fitting comfortably under your handKey Product Info . Easy-switch technologyHyper-fast scrollingDurable sculpted design Product Features Easy-Switch technologyPair your mouse with 3 computers then switch seamlessly between them at a touch of the button conveniently positioned under your thumb. The 3 illuminated numbers always let you know to which device you\'re connected Hyper-fast scrollingFly through long documents and web pages with a spin of the wheel - and stop instantly - or switch to click-to-click scrolling when you need precision Durable sculpted designA true athlete M720 is designed to endure with buttons built to withstand up to 10 million clicks. The large-sized right-hand design fits comfortably in your palm the rubber surface making it extra soft to the touch EFFORTLESS MULTI-COMPUTER WORKFLOWUnleash the potential of M720 with Logitech Flow for the smoothest workflow between computers. You\'ll be able to move your mouse cursor across three computers and even copy/paste text images and files from one computer to another. It\'s more efficient than sending yourself emails 24-month battery lifeYou\'ll like this mouse\'s boosted efficiency with 24 months of power on a single AA battery Personalized productivityUnlock the full range of possibilities and customize to fit your needs on Mac OS X and Windows by downloading Logitech Options Software. Set up and assign tasks to buttons with step-by-step instructions. An Immersion Guide is available to help answer your questions What\'s in the box? . Wireless mouseUnifying receiver1 AA BatteriesUser documentation