03.A780.400-2-91.M3642

The Zenith Defy Chronograph USM 03.A780.400-2/91.M3642 was introduced in 2025 as part of a four-part capsule series in partnership with USM Modular Furniture, each limited to 60 examples. The stainless steel case measures 37mm and carries the signature Defy traits of 1969: an octagonal body, faceted surfaces, and a fourteen-sided bezel. Chronograph pushers and the stainless steel ladder bracelet underline the retro-inspired execution. The USM Green dial features rhodium-plated markers with engraved grooves and three silver sub-dials arranged in tri-compax format, their azuré surfaces recalling the geometry of USM’s signature ball joints. Inside runs the El Primero 400, Zenith’s historic 5 Hz automatic chronograph caliber with column-wheel control. It provides hours, minutes, small seconds, central chronograph seconds, a 30-minute counter, a 12-hour counter, and a date display at 4:30, with a power reserve of 55 hours. Through the sapphire back, the rotor with star motif and USM en...