The high-frequency El Primero 21 1/100th chronograph crafted in a light yet rugged 44mm carbon fiber DEFY case with a black rubber strap. Its automatic movement features two independent high-frequency escapements beating at 50Hz for the chronograph function and 5Hz for timekeeping.
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Omega Speedmaster CHRONOSCOPE CO‑AXIAL MASTER CHRONOMETER CHRONOGRAPH Ref# 329.92.43.51.10.001
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