Logitech M720 Triathlon wireless mouse is built for endurance, versatility and comfort to help you succeed in a multi-device world. You'll be powering through tasks thanks to the Easy-Switch technology that lets you switch seamlessly between 3 computers. Harness the power of Logitech Flow technology and take multi-computer use to a bold new level. Control up to three computers and seamlessly move text, images and files between devices. You'll fly through documents and web pages using the hyper-fast scroll wheel, and hardly spare a thought to changing batteries thanks to 24 months of power on one AA battery. The large-sized sculpted shape fits comfortably under your hand, and the durable buttons are designed to withstand up to 10 million clicks. You can connect to Windows and Mac via the tiny Unifying receiver or via Bluetooth Smart wireless technology.