Back button normal back operation.
Trackman marble scroll wheel.
The m570 has five buttons.
It s not even only about the marble as it will work well with a mouse without wheel or another trackball that has a bad or no wheel.
The m570 lacks a precision mode button and its scroll wheel cannot tilt like the mx.
Back button marble turn scroll.
Ambidextrous trackball design a trackball design with a long broad palm area and gentle curves keeps your hand comfortable and supported all day whether you use your right or left hand.
Scrolling is done on application with mouse focus and without the need of clicking on application to gain focus.
Scroll wheel doubles as a third programmable button.
It s about using the keyboard any key really shift or control works too and can be used for the original function as well to helping adding hacking the scrolling function with the ball.
2019 03 21 at 13 08 update.
Left and right click forward and back buttons and a clickable scroll wheel.
But if gaming s not your bag and you re in need of a superior trackball the logitech trackman marble wheel is a nice choice that s sure to last you a few seasons.
Takes up little desktop space.
Fast accurate control is right at your fingertip with smooth tracking marble optical technology.