Zenith El Primero Caliber 3620Manufacturer Zenith Caliber Number El Primero 3620 Base Caliber Zenith El Primero 3600 Vibrations Per Hour 36,000 bph, 5Hz Power...Automatic 014
Seiko Caliber 5740CBrand Seiko Caliber Number 5740C Base Caliber 5740 Movement Type Manual wind, mechanical Jewels 23 Vibrations Per Hour 36,000 bph...Mechanical 310
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