The two batteries do not weigh the mouse down and let it work two to three months depending on how it's used. The Fast FR technology makes it as responsive as a wired mouse. And let no gamers tell me they notice the difference. Those who don't believe me can use the Mouserate utility to check if they like. Connection is stable and there are no cuts or interference.
With its regular Logitech 800 cpi sensor and 2000 images per second, this mouse is very precise in any resolution. We can recommend it for all uses including games and graphics. Its perfect ergonomics make it very comfortable to use. The investment of $50 (60 Euros) is well worth it.