This vibrating underwear by Ouch! will make you smile more than ever before. The underwear is soft and stretchy and contains a single speed bullet. Enjoy your private secret! Specifications rotations per minute 13000. Single speed. Noise level maximum 80 dB. Bullet vibrator width 17mm, product length 55mm e or approximately 2.16 inches by .66 inch. Vibrating bullet requires 3 AG13/LR44 batteries, included. Material ABS plastic. Water resistant. Phthalate free. Contains a single speed bullet vibrator. One size fits most. Comfortable. Perfect for beginners. Experience incredible sensations with this toy from Ouch.