USB rechargeable vibrating cock ring made of soft body-safe SEBS and ABS is powered by deep. rumbling Vooom technology with 10 penetrating vibration and pulsation functions. Stretch the ring around the base of the penis. or penis and testicles. and adjust the motor as you like it. Wear it on top for rumbling clitoral massage or underneath for pleasant pressure with added vibration. Full charge provides 60-plus minutes of power. Waterproof.