Logitech launches MX Master 4 flagship productivity mouse – the best mouse we’ve tested adds haptic feedback, circular Action Ring shortcuts

Logitech’s MX Master 3S has long held the top spot on our best wireless mouse list for its excellent scroll wheels, premium look, and comfort. But its days as our favorite productivity rodent may be numbered, as Logitech just took the wraps off its successor, the MX Master 4. The new model carries over everything we loved about the 3S, while adding haptic feedback and an “Action Ring” menu for quick access to commonly used tasks.

The haptic feedback resides in the thumb rest area, and has four intensity…