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Seiko 5 Automatic Watch - SYMK41

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Seiko 5 Automatic Watch - SYMK41
Name SYMK41
Style Dress
Gender Women's
Movement 4207
Diameter 23mm
Thickness 10mm
Shape Round
Material Stainless Steel
Water Resistance 30 Meter
Crown Position 03:00
Minute Hand Yes
Second Hand Yes
Day Yes
Date Yes
Band Size 12mm
Band Color Silver
Band Replaceable No / Difficult
Bezel Color Silver
Crystal Material Hardlex
HourMarks Bars
Brand Seiko

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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. Too bad the 4207 doesn't hack but the average woman typically does not really care about syncing their automatic watches to the time signal.

Item created by: Lethe on 2015-08-10 17:31:17

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