You've seen these large massagers in "certain" Japanese videos, but here's one that's a wacky 1/5th size version that's actually fully functional called Codenma (Little Denma)! Along the lines of the pocket rocket, this is a miniature denma massager that's measures only 6.5 cm (2.6 inches) and is powered by two button shaped batteries (which are included) and can be switched on and off via a simple switch. Included is a strap to attach to your bag for easy access