Enjoy sucking on demand with this vibrating stroker that delivers immediate suction while you press and quick release when you don't. A separate button offers an automatic suction option while the inner chamber buzzes with the strength of two vibrating bullets cushioned behind a deliciously textured channel. 10 vibrating speeds and patterns. 5 sucking speeds and patterns. Manual on-demand suction 2 vibrating bullets. Stroker made from soft and stretchy TPE. Insertable length 3.75, Insertable diameter 0.75 (Entry stretches for most). USB magnetic rechargeable, cable included. Waterproof.