Adjust your vibration with just a click. The dual vibrating bullets come in two sizes to double the pleasure. They have 7 functions of vibration and pulsation and provide an array of gratifying patterns. Their soft coating feels delightful against your skin. and being waterproof they can be used anywhere. The Clicker light pulsates along with the vibration and there is a separate on off button. Batteries{9} : None[190], 2 x AAA[188](+#0.58)