Manufacturer Zenith Caliber Number El Primero 3620 Base Caliber Zenith El Primero 3600 Vibrations Per Hour 36,000 bph, 5Hz Power...
36000
Brand Seiko Caliber Number 5740C Base Caliber 5740 Movement Type Manual wind, mechanical Jewels 23 Vibrations Per Hour 36,000 bph...