Get ready to create some sparks in the bedroom! This smooth and stimulating Electro Couples Kit comes with two bi polar erection rings, made from conductive silicone, allowing for a tantalizing current flowing through one ring and back, exciting the nerves along the way! Also included is an Electro Insertable which will allow you to probe, excite, and stimulate all the erogenous zones of your partner, including vaginal and anal insertion. <br /><br />Made from smooth, body safe silicone which glides against the skin as a stimulating pattern of current teases and tingles from inside your body! The power unit provides 4 modes, a speed feature, and an intensity wheel. Measurements Probe 6 inches in length, 5 inches in circumference. Rings small ring 1.5 inches in diameter. Large ring 1.9 inches in diameter. Box 4 inches in length, 2.5 inches in width, 0.6 inch thick. Materials Silicone, ABS plastic. Requires 2 AAA batteries, not included.