अंतराल टाइमर चुनौती - हाथों से मुक्त चरमसुख

I'm having fun with a new contraption- A vibrator on a repeat “On / Off” timer, that's stuck to slaves cock while in his chastity cage.. I want to see how long he can last while I sit on his face, and automatically vibrate him every few seconds.. Oh and punish him for any unnecessary sounds and movements..