Fukuoku 630 Two Fingers & A Thumb massager vibrator. Fukuoku two fingers & a thumb fun is a multi-finctional, multi-speed unit that makes fingering easier and more fun. The two fingers as wellas the thumb VIBRATE together at various speeds and the two fingers also ROTATE. It is lightweight, non-cumbersome and fits very comfortably into you hand with easy access to the multi-speed controller that contins three (3) AAA batteries which are included.