My Waterproof Triple Stimulator produces powerful vibrations and comes with two interchangeable heads to offer three unique options for your finest stimulating pleasures. It is waterproof for loads of fun, in or out of the water. Two AA batteries, not included, provide the powerful vibrations. My Waterproof Triple Stimulator is 6.75 inches in total length with the G-spot stimulator, and 7.25 inches in length when attached to the bulbous, rounded stimulator. Which one do you think you'll like best?