Known worldwide as an expert on men's enhancement products, Dr. Joel Kaplan works with the designers at California Exotic Novelties to produce unique stimulating pleasure toys for beginning users as well as seasoned veterans. Dr. Joel Kaplan's Vibrating Prolong Ring is a soft, stretchy, and durable vibrating erection enhancer with a new interlocking design for maximum support. Enjoy the stimulation from the powerful 3-speed wireless stimulator with push button control. Made of TPE (enhancer), ABS with Silver Plating (stimulator). 1.75x 2.5/ 4 cm x 6 cm (ring); 2.25x .75/ 6 cm x 2 cm (stimulator). Batteries included (3 watch, 6 included).