Achieve colossal results with Colossus from Enlarge. Completely water proof for underwater play, this powerful pump includes a stretchable silicone donut and a supple TPE masturbator for added pleasure and stimulation. Rechargeable. Press and hold power button for 5 seconds to enter standby mode. Quick press top arrow to cycle through suction speeds. Quick press power button to pause/stop pump at desired pressure. Press bottom arrow to release air pressure (quick release). Insertable inches - 7.76