Fortis Watch Stratoliner Blue Japan Bracelet F2340010. Adding to many firsts in the history of Fortis, the redefined Stratoliner collection features the first manufacture calibre which was custom built for space and tested in the Stratosphere. Inspired by the persistence of great visionaries, the Stratoliner is both tribute and motivation, it is the tool for those inventing tomorrow. It is the tool to go beyond the impossible.