Diameter Caliber IV – The movement 16 ¼ lines (36.6 mm) FrequenCY 18,000 semi-oscillations per hour Running time 46 hours Jewels 22 rubies, 1 diamond * Shock-resistant gold-screw balance * Breguet spring * Swan-neck fine adjustment * Pulsating eccentric second hand * Second hand stop mechanism * Winding wheels with double solar finish * Monopusher column wheel chronograph * Chronograph wheels in gold with two hundred teeth * Minutes counter mechanism installed on the backside *Frictionless decoupling of the minutes counter, when the chronograph function is not in use * Engraving plate on customer’s demand Caliber IV 55
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