Cons: Cheap paint that wears off quickly. Extremely short receiver distance (under 3 feet at most). Tendency for mouse and receiver to stop communicating especially after reboots. Middle mouse button finicky (counting scrolls as clicks and vice versa).
Summary: This is a small sized mouse that is very comfortable to use and has a lot of features. I would rate this as an outstanding product except for the following issues: Poor quality control-several mice (I ordered 10 for a business)did not work out of the package - major issue seemed to be poor fit of battery door keeping mouse from working.
Pros: Accurate Tracking, Comfortable Design, Fast Response, Glides Smoothly, Great Features, Works On Any Surface
Cons: Not for continuous use, Poor Battery Life, Poor Quality Control
Pros: Looked like it had the features I wanted, default buttons, scroll button, good looking, "fits" well
Cons: Thought the simple 1 2 3 .. instruction were too simple. The thing NEVER has worked. I downloaded the software as they suggested (" additional features"). Still never worked. Some1 sugg conflict with wireless phone.