The Smart Bead turns kegel exercise into a personal training routine for longer and stronger orgasms. Squeeze and hold when you feel the discreet vibrations, and rest when they stop. Routines last just a few minutes, while touch-sensors and an intelligent memory function measure your performance. Five progressive vibration levels are available. The bead automatically selects and updates the routine according to past performance. Perform up to 200 routines from a single AAA battery. The bead is made of body-safe silicone and is fully waterproof.