Mechanical Mainspring for ETA C07.111 C07.121 Movement Watch Spare PartsFeature: The product is strong, durable and enjoys long service life. Can be used as a spare parts to facilitate the replacement of Main Spring. This is a high quality watch movement parts made to exact specifications and size as the for ETA C07. 111 Movement. Specification: Material: Steel Package Include: 1 x Main Spring

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Miyota 6P27 Quartz Movement

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1x Watch Strap Case Bezel Kit

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FeaturesHattori Y121

30 sizes for each box

21mm {NOT included)

The upper outer diameter is about 30mm: the total height is about 7

turning and setting hairspring-collets

15 types for your choice

1 x Watch Automatic Mechanical Movement