The Spring Drive is a watch movement that was developed by Seiko EpsonMilestone Seiko/Credor Spring Drive Milestone Products, Seiko Epson through collaboration with Seiko Instruments and Seiko Holdings. Up-to-date, it is the only commercially available wristwatch embedded technology capable of truly creating a continuous movement of the second hand, instead of the traditional beats per time unit as seen in quartz or mechanical watches.
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