Packed with intense pleasure for both you and your partner, the Doc Johnson OptiMALE Vibrating Double C-Ring has two stretchable silicone rings -for your shaft and testicles - helping you achieve and maintain long-lasting erections and prolonged ejaculation. For doubly powerful stimulation, the dual bullets in textured sleeves target multiple erogenous zones: clitoris, anus, and testicles. The waterproof push-button bullets boast 10 unique functions and are removable for extended playtime. Phthalate-free; batteries included. 10-Function Dual Bullets: Removable, Push-button, Waterproof. Total length: 3.2â . Usable length: 2â . Width/Diameter: 2â . Circumference: 6.30â . batteries included: 6 (3 each).