It was a good purchase for me. Having a lot of pain in my hands and wrists this did help. It takes a bit to get use to but I like it so far. I fell that it is a bit over priced could be $29.99 value instead of $49.99 but other than that it was a good purchase!
Verified purchase: Yes | Condition: New
As far as I can tell, there is no way to assign/reassign basic actions such as double-click etc. to the two large buttons at the top...a major design surprise/flaw.
Verified purchase: Yes | Condition: Pre-owned
So much easier to use than a mouse. With mouse your entire hand must move and you need flat surface. With trackball, only your thumb is moving and surface doesn't matter.
Verified purchase: Yes | Condition: Pre-owned
Always buy what you can trust. This translation is well designed, feels great & works well!
Verified purchase: Yes | Condition: Pre-owned
I wore out the left click on my M570. Hopefully better switches on the M575.
Verified purchase: Yes | Condition: New
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