With powerful vibrations at both ends, the Vibratron Duo gives you plenty of orgasmic options. Simple push-button controls puts the three speeds and three pulsing patterns at your fingertips. Have fun finding out which combination of vibrations is best for you. Great for internal and external stimulation from the tapered and noduled ends. Length : 18 cm Thickness : 3 cm Batteries : 4 x AAA (not included)