Logitech has developed two new models of its high performance MX Master mice: The Anywhere 2S & the re-booted MX Master. They both feature an upgraded version of Logitech’s Darkfield High Precision 4000-dpi tracking for laser-precise control on almost any surface. They also offer a new software system called Flow that allows users to seamlessly control 3 devices simultaneously. 70-day rechargeable battery life. Mac & PC compatible.