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9  of these sold for an average price of: 95.7795.779 of these sold for an average price of: 95.77
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Seiko 5 Automatic Watch - SYMA43
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NameSYMA43
StyleSports
StyleDress
GenderWomen's
Movement4207
Diameter24mm
Thickness10mm
ShapeRound
MaterialStainless Steel
Water Resistance30 Meter
Crown Position03:00
Minute HandYes
Second HandYes
DayYes
DateYes
Band Size12mm
Band ColorSilver
Band ReplaceableYes
Bezel ColorSilver
Crystal MaterialHardlex
HourMarksBars
BrandSeiko



Description:
The Seiko "4207" mechanism is designed for Ladies' watches. It measures about 17mm in diameter. It uses a ball bearing quarter-arc rotor and can be hand-wound.

The 4207 is a tiny movement which also uses an equally tiny main spring. Its power reserve is significantly smaller than the 7s caliber which has a bigger main spring. The smaller mass of the oscillating rotor may also mean that automatic winding is less efficient compared to the bigger mass of a typical 7s rotor. Therefore, it makes sense to add a manual wind feature to assist in keeping the main spring fully wound. The 4207 doesn't hack and thus cannot be synchronized to a time source. Seiko decided that this feature probably was not important for the target consumer.
Item created by: Lethe on 2015-08-10 17:27:54

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