Manufacturer Seiko Caliber Number 8L36, 8L36A Movement Type Automatic, self-winding mechanical Jewel Count 27 Beat Rate / Frequency 28,800 bph...
Seiko Credor
Brand Credor Manufacturer Seiko Caliber Number 7771, 7771A Movement Type Quartz, battery-powered Jewel Count 6 Frequency 32,768 Hz Battery Cell...
Manufacturer Seiko Caliber Number 6810 In-House? Yes Base Caliber Seiko 68A Similar Calibers Credor 6810, 6810A Movement Type Mechanical, manual-wind...
Brand Credor (Seiko Watch Corporation) Caliber Number 7R31, 7R31A In-House? Yes Movement Type Spring Drive, manual-wind Diameter Unconfirmed Height Unconfirmed...
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Mido All Dial
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Miyota 0S20
Benjamin James Scarfour automatic uses this movement.