This is 3-in-1 maturbator: A Safe Electric Male Masturbator + A Powerful Cock Trainer + An outstanding Stroker. With the newest Pulse Technology, It gives us a Pulsating Orgasam with high-frequency vibration. It is not only suitable for sex lovers who want to find new stimulation, but also for beginners or foreplay. It can improve the blood flow to cock, creating thicker, longer and harder erections. Constant using can prolong sexual activities for men.