500 Combinations of impulse functions. 10 independent speeds of shaft rotation plus silicone bunny with 5 hypersonic functions: vibration with 10 independent levels of speed and 4 functions of escalation with progressive patterns of acceleration. Strategically positioned metal beaded shaft made of hygienically superior silicone. Ultra sensitive, glow in the dark control pads with new auto off switch on any function. Graduated led indicator and pleasantly scented. Uses 4 AA batteries (not included)