My Cockring with Ass Blaster ring plus prostate massager features: Quik speed. Cock ring with smooth butt plug. Enhanced anal pleasure while the cock ring prolongs the pleasure. Waterproof vibrating cock ring is made using phthalates free RoHs compliant materials Silicone, ABS plastic. Size total length 5.25 inches, diameter 1 inch, circumference 2.75 inches. Vibrating sex toy requires 1 AAA battery, not included.