Logitech M720 Triathlon Multi-Device Wireless Bluetooth Mouse with Flow Cross-Computer Control & File Sharing for PC & Mac Easy-Switch up to 3 Devices BUILT FOR ENDURANCE, VERSATILITY, AND COMFORT 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 hand. KEY FEATURES EASY-SWITCH TECHNOLOGY Pair 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 SCROLLING Fly 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 DESIGN A 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 WORKFLOW Unleash 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. 1 24-MONTH BATTERY LIFE You\'ll like this mouse\'s boosted efficiency, with 24 months of power on a single AA battery.2 PERSONALIZED PRODUCTIVITY Unlock the full range of possibilities and customize to fit your needs on Mac OS X and Windows by downloading Logitech OptionsSoftware. Set up and assign tasks to buttons with step-by-step instructions. An Immersion Guide is available to help answer your questions.