Logitech Ergo M575 New Version Wireless Trackball Mouse, Easy Thumb Control, Precision and Smooth Tracking, Ergonomic Comfort Design, Windows/Mac, Bluetooth, USB - Graphite Extra Battery Bundle

I can't talk about the usage and performance of all of you people that want to play with "Microsoft Windows". I'll stop there. To each, his own.For a "Unix", "BSD", "Linux" user, this may be the best trackball out there. With the opensource solaar, you can incorporate this and any other "logitech" device into operation on your PC.The Logitech M575 mouse gives unparalled precision.

My old corded mouse still worked but getting less precise. This one is a dream! Excellent product!

My wife has worn several of these out over the last 29 years. This (unlike some of their gear) has remained a solid and durable unit. One caveat: you have to pop the ball out, remove any grunge from the three contact points in the socket, clean the ball and reinsert it about once a month or so (more often if it sticks). The product is designed to be cleaned.

Long time M570 user. Worn out my fair share over the years. Moved up to this model when the predecessor was discontinued. At first was a little worried about the change, but have been pleased. As a bonus, it works both with the included dongle as well as BlueTooth.

After several years my old M570 finally kicked the bucket so I decided to go for the new model.....positives the dual wireless dongle/ bluetooth combination is handy the slightly bigger size I like as well! But The left button randomly sticks since day one, the ball is not as smooth as the M570 and not a huge deal but it was advertised as a "Extra Battery Bundle" which simply was not true....makes me wonder if it is truly the newer version of the M575.

This is much stronger built than the M570 I have been using for years. Skofar very pleased. It was a little tricky configuration and needed both old and new mouse to complete.

We have multiples of this track ball, and love them. Very comfortable, very accurate, easy to clean, the battery lasts a long time and easy to pair. No issues.

El mouse tiene un desempeño excelente, despues de mirar todos los comentarios y basada en mi previa experiencia con el modelo 570, decidó continuar por lo seguro y fue la mejor opción, sin lugar a dudas pagar un poco mas tiene mas beneficios que ahorrar un poco al principio y luego perder mas.