the angle. the little monitor screen in the corner showed me what he was seeing. often he had zoomed in so close all you could see was the lips of my cunt wrapping around my fingers as they slid in and out bringing me to yet another orgasm. other times he would watch my face as i came or scan my D size tits or nipples. he had the system installed the last time my husband was out of town so he could keep an eye on me... us really since there was one in our bedroom as well