Shaking, vacuum, heating...all the functions you want, showing you the best comfort, adapted to your taste. The fully automatic vacuum suction function sucks the air out of the onahole, giving your cock a feeling of being stretched. The heating system reproduces warmth close to human body temperature! When the button is pressed to activate the preheating function, the heating will start, and the warm inside of the onahole is waiting for you to enjoy slowly!