COLT Vibrating Stud Cock Ring with Micro Vibrator. Vibrating penis ring that provides stimulation for both partners. The super soft and smooth silicone ring is super stretchy to fit all sizes. Includes a removable micro stimulator. Prolong ejaculation and maintain long-lasting erections with this powerful ring. Phthalate free, non-toxic materials: Thermoplastic Elastomers TPE ring, ABS plastic stimulator vibrator. 1.2 inches diameter ring. 2 inches by .5 inch stimulator vibrator. Batteries included. 2 watch size to power up, 4 included. Category: For Men, Rings & Sleeves, Rings. COLT Vibrating Stud is a registered trademark for California Exotic Novelties. Sex Toys and sexual wellness. Made in the USA.