Fortis Watch Marinemaster M 44 Ocean Blue F8120021. Fortis watches have always led the field in innovation and quality and in 1926 they presented the world’s first self winding wristwatch in series production. Since then Fortis have won many prestigious awards for their work in the field of Horology. As a longtime partner of space organisations, FORTIS invests in modern technologies and ensures in this way the future of the 100 year old brand in an ever changing watch market.