Yes, the low weight is strange at first, but I don't regret buying it.
Only the price is insane... the thing is somehow getting more and more expensive.
My husband doesn't find them loud. Especially since he plays with a headset. It depends on what you perceive as loud. I, for example, can hear them very clearly (wife) unfortunately he had the razor before ... ??? I can't tell you anything more specific. However, he really likes it and says it's like the old Logitech mouse from the old days, only better. He is grateful that I got it for him. The only thing is the price. The mouse has a lot of good features, but if you have very large hands I would honestly advise you not to use it as it is really a delicate model.
You can register the mouse as a service case in your customer account. There you will receive step-by-step instructions on how to proceed.
If the responsible service centre identifies a warranty case, the mouse will be repaired or replaced.
There is none, otherwise e-sportsmen would not use it.
The connection runs via "Lightspeed" the 2 USB connections, one goes into the mouse and one into the PC.
One is manufacturer no. 910-005880 and the other is 910-005881. There will be some tiny difference that you won't notice in the end, but you can google it if you're more interested.