P-Rock Black Prostate Massager. Waterproof vibrator is the perfect angle for prostate and testicular stimulation. High powered stimulator with push button activation. Soft and pliable. Safe and pure for body and pleasure. Made using unscented Silicone probe, ABS plastic stimulator. Vibrating sex toy requires 1 N battery, included. P-Rock measures 4.5 inches long by 1.5 inches wide. Stimulator measures 2 inches long by .6 inch wide. Always clean before and after use. Category: For Men, Anal Toys, Probes. P-Rock Prostate Massager is a registered trademark for California Exotic Novelties. Sex toys and sexual wellness. New images added Embrace Seduction California Exotic Novelties Web Image Library DVD January 2011: Bulk, Catalog, Package. May 4, 2013.