Looking at the headphones we can see that they remind a lot of others on the market, you have a volume controller on the right ear and a mic volume controller on the left.
As mentioned you can control the volume from the headset itself, I have not seen wireless headsets yet that also controls the mic volume like the Chiamera does.
The left earcup has the On/Off button and also the microphone mute button on it, very nice controls with big buttons that are easy to use even without looking.
On the right earcup you will find the mode button and the sync/mute button. The mode button lets you change mode between “normal” mode and the Xbox mode that you need to activate for them to work on the 360.