Meet the LUNA Smart Bead, your very own personal pleasure trainer! With touch-sensors that respond to your every squeeze, the LUNA Smart Bead measures your orgasm-potential and sets a routine that's right for you. Progress through its 5 vibration-guided levels and you'll be enjoying longer and stronger orgasms in no time. Touch-sensors measure your orgasm-potential. 5 progressive vibration levels. Intelligent memory function remembers your progress. Includes continuous vibration mode for immediate pleasure. Up to 200 routines from a single AAA battery. Smooth Silicone 100% waterproof. Size: 31 x 34 x 82mm / 1.2" x 1.3" x 3.2"