Like Jeeps, GPS, and the Internet, some of today?s popular wristwatch models started out as military projects. Here are five modern timepieces whose ancestors were made-to-order for soldiers, sailors, and airmen.

BLANCPAIN TRIBUTE TO FIFTY FATHOMS MIL-SPEC

The Tribute to Fifty Fathoms MIL-SPEC is based on a historical predecessor from 1957-58, designed specifically to pass a battery of tests conducted by the U.S. Navy. The original model became standard issue equipment for American combat swimmers, including the SEALs? elite Underwater Demolition Team. Its notable feature was an indicator, on a large disk at 6 o?clock, which changed its color from white to red if liquid leaked into the case. Aside from the 1950s-inspired disk, the watch has other hallmark features of Fifty Fathoms watches, including large, luminous indexes on a black dial and a scratch-resistant sapphire bezel. The case boasts a 300-meter water-resistance, suitable for military diving and an upgrade from the 91.45 meters (50 fathoms) of the original model. The modern watch is powered by Blancpain?s automatic manufacture Caliber 1151, which stores a four-day power reserve in two series-coupled barrels. Limited to 500 pieces, it comes on a NATO or sailcloth strap (price: $14,000) or a steel bracelet with a secure buckle ($16,200). More details here.
Blancpain Tribute to Fifty Fathoms Mil-Spec

TUDOR BLACK BAY P01

As a supplier of watches to the U.S. Navy in 1967, Tudor developed a prototype for...