Manufacturer Seiko Caliber Family 4R Type Mechanical, automatic Lignes 12”’ Diameter 27.4mm Jewels (see below) Vibrations Per Hour 21,600 vph...
4R57B
Manufacturer Seiko Caliber Number 4R57, 4R57A Movement Type Automatic Lignes 12”’ Thickness 6.63mm Jewels 29 Vibrations Per Hour 21,600 bph...
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This seems to be a fairly vague definition. To me the Seiko Kinetic is more…
Hi Chris, glad you found the article to be helpful. Thank you for commenting :)
Ive been wanting to build a GMT watch for a while and found this article…
Found this movement in a 'Relic' ZR55086110501
Definitely a fake Mavado
Can anyone ID the movement in the picture attached to this comment?
Hello, if you read a couple of messages back I found an exploded diagram that…