Sorry for the silly questions... for the last time i bought gamepad 8-9 years ago. I desperately need some with optical wheel and at least 12 buttons. But let's make clear buttons' names...sorry i couldn't find information about their names.
1. For which button is referring "7-axis" and what it means at all? Does it refer to D-Pad or for analogue sticks? Is it related to 360° of analogue sticks?
2. Are the middle buttons of the gamepad programmable or they are usable only for regulation of the gamepad?

3. In this gamepad below, is that hoop resembling surrounding D-Pad thing optical wheel or useless decoraion?

Thanks.