I might sound like a total noob...but I own several personal toys, and just by looking at them I know how to operate them or can figure out how it works...
I never purchase a Hitachi because...Im totally confused on HOW it's suppose to work -_-... So I just let it spin and maneuver across my lady parts, or it meant for insertion? Its such a simple, discreet(ish), looking design, that Im totally thrown off.