Excerpt: The Good Comfortable and precise. Good button placement. Very long battery life. Power switch and stowable Unifying Receiver. Easily programmable. The Bad No horizontal scroll or free-spin mode. Noisy. Ergonomics and precision feel Veteran trackball owners will find the M570's shape very familiar. Logitech makes this clear that it was on purpose: even on its promo page, the company showed that the design is a dead ringer in many ways for models several years old or more.
Pros: Comfortable and precise., Good button placement., Very long battery life., Power switch and stowable Unifying Receiver., Easily programmable.
Cons: No horizontal scroll or free-spin mode., Noisy.