I own the mouse for a while now and I'm very satisfied with it, it is very comfortable, for long sessions too,
You can adjust it's weight with five "weights" that come alongside the mouse, each weights 3.6 grams.
Logitech's software is very simplified and easy to use, and you can sync your lightening with other Logitech gear. (if you have any, obviously)
Logically, the mouse comes with a braided cable.
This is mine, I usually use two of the provided 'weights' (but it's game dependent with me)
I think it's one of the best gaming mouses there are out there right now, I am most certainly recommending it.
