To celebrate the 25-years of G-Shock anniversary, Casio produced Robo-Watch Superheroes Characters that designed by Shiro Nakano. The Casio Robo-Watch Superheroes is not available for sale, it just function to promote the new series of digital watches. Well, if many people interested with it, why Casio not produce it then sell it to the market. I would buy it one, if it available.