Sinda Vibrating Uretheral Sound With RingIt's a known fact that women have a shorter urethera than men, so ladies Sinda is the vibrating sound rod for you and it even has an awesome ball at the end for that extra bit of tickle! Requires 1 x AAA battery. Size Small Approximate Measurements Overall length: 193mmInsertable length: 111mmPlug width at slimmest point: 6mmPlug width at widest point: 8mm Size Medium Approximate Measurements Overall length: 275mmInsertable length: 155mmPlug width at slimmest point: 7mmPlug width at widest point: 11mm This product is certified 100% Non-Magnate and medical-grade steel. Beware of cheaper products that are not solid surgical steel but chromed steel or poor quality surgical steel that contains Magnate. Magnate is the ingredient that makes steel rust. We will only include this endorsement on our 100% surgical steel products.