Vibration function / USB rechargeable] ##The ultimate men's masturbation machine that wraps around the entire rod and stimulates with powerful vibrations for pleasure! #Two vibration motors are built in, and by changing the direction of the wrap, you can enjoy two different types of stimulation: "backside x glans attack" and "backside x testicles attack". ##10 vibration patterns###Double motors###Medical grade silicone material###Waterproof