Seiko 4R35/36/37/38/39/71 Mechanical Watch Features

This document describes the features and characteristics of mechanical watches, including using the main spring to provide power operation, manually rotating the crown to wind the main spring, the accuracy of mechanical watches varies depending on usage conditions, and the possibility of slowing down or speeding up due to strong magnetic forces.


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MD5 Checksum: 0353882C17C155BC44A87A79FB75D03D

Publication date: 07 December, 2022

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PDF Link: Seiko 4R35/36/37/38/39/71 Mechanical Watch Features PDF

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