Logitech Ergo M575S Wireless Trackball Mouse, Wireless Ergonomic Mouse with Bluetooth and Encrypted Dongle, Comfortable Thumb Control, Precise and Smooth Tracking, for PC/Mac – Graphite Blue Ball

Customers find the trackball mouse works well and appreciate its Bluetooth connectivity and ease of use. The responsiveness receives mixed feedback - while some find it very responsive, others report imprecise cursor movement. Customers disagree on the button responsiveness, with some appreciating the no-click feature while others experience unwanted clicks. The ergonomics and durability also receive mixed reviews, with some praising its gaming and CAD capabilities while others report it breaking after two months of use.