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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Hublot Classic Fusion Aerofusion Black Magic Chronograph 45mm, Ref# 525.CM.0170.RX
Breitling Superocean Automatic 44, Reference# A17367D71B1A1
Unworn Hublot Classic Fusion Chronograph Black Magic Ref# 541.CM.1171.RX 



