Cal Exotics Embrace Couple's Ring. 7 functions of intense vibration, pulsation and escalation. Luxurious body safe Silicone. Removable vibrating massager. Stretchy and comfortable enhancer. Batteries included. Silicone ring, ABS plastic with silver plating stimulator. Requires 3 watch size batteries, included. 3.25 inches by 1.75 inches stimulator. 1 inch ring diameter.