The Power Butterfly satisfies and delights with a usable length of 5", a diameter of 1.5", and five functions of vibration, pulsation, and escalation. The powerful dual motors and triple point stimulation from shaft, wings, and antenna make this one butterfly you will want in your garden again and again. And it's perfect for the shower or bath because it is waterproof and comes with a handy nylon cord. Takes two AA batteries, not included.