Tudor Pelagos FXD Watch, 42mm Blue Dial, M25707B-0001The Pelagos FXD model, where FXD refers to the extra robust fixed strap bars of the case, was developed in conjunction with the French Navy's combat swimmers. Waterproof to 200m (660 ft), it was designed for underwater navigation and is optimized for professional use. Also in the range is a model that pays tribute to the decades of TUDOR watches on the wrists of US Navy divers. Complete with fixed strap bars, a titanium case, a high performance