The vibration’s duration can easily be adjusted just with one’s feeling. Also, this application offer users five kinds of patterns of stimulative vibration which makes it unique from others. Rhythmic: You can feel a Rhythmical beat. Stuck: You can enjoy a tantalizing motion which is kind of addictive. Accel: Due to a vibration designed based on a mathematical model which is close to human senses, you can feel such a stimulative speeding up vibration. It can be used even the application be