I had my old razer deathadder for about 4 years before it broke. I put that thing through hell, the amount of times I hit it against the table and it didn't break was insane. I recently bought a new one and its about a year old now and it works perfectly fine.
My razer keyboard is coming to the end of its life and I've had it for about 2 years, but thats because I rage on games quite a lot and keep on hitting it.
Razer headsets aren't exactly the best. I've had 3, all 3 have broken within a year. They are good quality but they break so easily its stupid.