The headset on the left has been used for 9 months and I stopped using it because the left controller is broken. The headset on the right was used for two years, the left controller broke, and I stopped using it. Regarding the controllers, there are three controllers: The right and middle controllers are right-hand controllers. They work and have no problems. The left controller is a left-hand controller and is broken and doesn't work. It connects for one second and then immediately turns off. I don't know what the problem is.