OhMiBod vibrates to the music on your iPod or mp3 player. Just Plug it in and let yourself go. Use the volume wheel to increase rhythm intensity and find the ultimate groove. The OhMiBod Vibrator comes with vibrator, 3ft freedom cord, additional end cap for use without music, universla headphone connector, and velvet privacy pouch. The vibrator measures 7 1/2" long and 1" wide.