Very good quality inside. From above it is now terrible, I don’t want to take it in my hand. A real example, in the photo you can see the serial numbers directly. I'm using a different mouse. The official dealer immediately froze, the warranty period of 1 year has passed, in what conditions the mouse was stored, I don’t know. (Yes, I keep all devices over 100 dollars on the stove.) Well, what can I say in the final - it's strange, the price is high, I would like it to work a little longer. It is difficult to say whether I will take a new one again. I'll try to find the case, but you can't officially buy it, and no one will change it after a year either.