Headphone which alerts its user when his\her setting portions is wrong. One of his most famous inventions is a submarine, named it "Saqr Aloruba" which can dive in 6525 meters depth under water; surpassed the depth that the Japanese submarine "Shinkai" can dive to a depth of 6500 meters. He said that during the four years he spent on inventing the submarine he have heard the word "impossible" 232 times, and he wrote each "impossible" word he heard every time, he loves challenge.