Eivian, the set you need to enjoy quadrupled. Inside the Eivian set you will find a round part, which we will call the controller, which allows you to use the four members of the set, which I explain below: First we have a double function vibrator. It has 8 vibration functions and 3 intensity levels, which makes both the body of the vibrator and the clitoral stimulator move in time. It also has a telescopic/thrusting function. This is followed by a stimulator with two tongues that will move with the vibrations and stimulate any part of the body you want, try nipples, clitoris or your partner's body. Then, a point stimulator makes it easy for you to stimulate any point you want with the vibration function. And finally a vibrator with a curved and wide shape for superior stimulation. Exchange the controller with any of the 4 members of Eivian and enjoy without limitations. Thanks to all its components you can enjoy up to 24 possible combinations. Its high-quality premium silicone materials make it feel soft and delicate against the skin. We only recommend the use of water-based lubricant and that you clean your toy before and after each use with warm water and a good toy cleaner, check out the Nanami brand to complete your pleasure set. Characteristics. 4 piece set Controller + 4 interchangeable parts 8 vibration functions + 3 intensities Vibrator with thrusting function High quality premium silicone Very quiet motors Raincoat