The ENVY Seventeen is redefining Kegel exercisers with its intense incremental speed control. The discreet exerciser has an easy retrieval cord. Like other ENVY products, the Seventeen is unscented, non-porous and hypoallergenic. This product boasts a complete charge time of two and a half hours as well as independent speed control, which gives the user more options. Made of premium Silicone, it has a satin finish that is virtually seamless. Plus, it is whisper-quiet and waterproof. It comes with a universal USB charging cord and security travel lock function for the users on the go.