https://www.engadget.com/2017/10/17/...use-ergonomic/

Microsoft has taken the wraps off the Surface Precision Mouse, a Bluetooth LE 4.2 and wired ergonomic model designed for folks who work on their PCs all day. With a wide flange for your thumb, it bears a slight resemblance to Logitech's MX Master 2S mouse, albeit with a less flamboyant, more business-like design. Microsoft says it's aimed at customers of the all-new Surface Book 2 and Surface Studio, who tend to be graphics pros, coders, engineers and others who need both accuracy and comfort.