Elva has 5 different modes, and 5 intensities in every mode, so you have 5 x 5 = 25 + 1(Intelligent Mode)=26 selections. More ways for you to explore. Despite of Elva's small size, the motor inside of her silicone body still lives up to your strongest desires. 5 different intensities, from weak to strong, which one is your favorite? Elva is designed with pinhole charging port, that make it completely waterproof.