Logitech Wireless M570 Trackball Sculpted Shape to Provide Better Support for Your Hand

Customers find this trackball mouse to be of excellent quality, comfortable to use, and easy to set up, with one customer noting it works well with their ergonomic keyboard. They appreciate its ergonomics, with one mentioning it's perfect for arthritic hands, and find it worth the price. The responsiveness receives mixed feedback - while some say it moves quickly, others report issues with the scroll wheel being jumpy.