U-Boat Classico Doppiotempo Auto SS

This Classico model combines a chronograph with a second-time-zone function, tracked via a bidirectional 24-hour graduated bezel, in a 46mm AISI 316L stainless steel case with satin hand finishing and U-Boat’s left-sided crown, protected by the brand’s patented device. The three-tier black dial carries white Arabic numerals with Super-LumiNova treatment and a steel frame around the markers, protected by an anti-reflective sapphire crystal. Sealed with seven external screws, the caseback includes a small fumé-sapphire window onto the balance wheel. The Swiss automatic movement, personalised to U-Boat’s specification with the stem at 9 o’clock, runs at 28,800 vibrations per hour with roughly 38 hours of power reserve. It is fitted on a hand-finished black calf leather strap and rated to 100 metres of water resistance.