Designed to reach every sensitive spot with its vibrating dolphin. this power tool comes with some interesting features. The top of the vibrator can offer 4 different rhythms. And the shaft itself. with its built-in beads. comes with 8 different vibration settings. You can choose the direction of these movements. Four AAA batteries included. Measures 8.7 in. (22 cm) long with a 1.2 in. (3 cm) diameter.