U-Boat's latest addition to their collection is their most rugged timepiece yet. The Cassico U-1001 ($6,800) sports an unmatched water resistance and pressure-rating of 1001 meter thanks to the grade 2 titanium case, thick sapphire crystal, pressure escape valve. With a limited production of 1,001 pieces worldwide, each U-1001 features an Automatic Swiss movement with U-Boat-engraved rotor, multi-layered black dial with recessed numeral and index marker in photo-luminescent color, specialized U-boat, sleek rubber strap and titanium egraved plate and deployant buckle. [source]