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 favourite? Elva is designed with pinhole charging port, that make it completely waterproof. Do it in the shower, in the bathtub, or in your swimming pool, wherever you pleased. Elva has a SVAKOM Intelligent Mode which highly imitates the vibration frequency in the whole process of sex from the beginning to orgasm. Single-click the "S" button, you can start a wonderful sex journey. From bashful foreplay, sexy teasing, strong pulsing, to multiple climaxes, it's a heavenly sex experience you don't want to miss. Svakom only uses the highest quality motors, delivered from the best manufacturers. This is how we know that our motors are powerful , quiet and have a long life span. Billy's voice is under 50 db after it's turned on, you can barely hear anything from beyond 1 meter distance. Elva can be used with and without the remote control. With the remote control, this will increase the interaction between you and your partner. It is more convenient to change mode and intensity by the remote control if you are using the product yourself. Luxurious, ergonomic designed, Billy is a vibrator with beautiful look, and also with great efficiency in improving the quality of women’s sex life.