The Luna Smart Bead is designed with touch-sensors that reacts to your muscles flexing with every squeeze you do. It is so smart that it has a memory function and it can set up a routine that is perfect for you. Especially with 5 guided levels for you to progress through Perfect for pelvic floor exercising but can also been used for immediate pleasure with 5 fantastic vibration settings. And of course as it is a Lelo product it is made out of beautiful silicone and comes with a 1 year warranty. And its waterproof, exercise in the bath or shower.N/A