Search:
Type the text to search here and press Enter.
Separate search terms by a space; they will all be searched individually in all fields of the database. Click on Search: to go to the advanced search page.
Classifieds Only: Check this box if you want to search classifieds instead of the catalog.
Please help support TroveStar. Why?
This item is not for sale. This is a reference database.
Seiko 5 Automatic Watch - SYMA51
Click on any image above to open the gallery with larger images.
Sell this item on TroveStar
Sell
Add a comment about this item.
It will be visible at the bottom of this page to all users.
Comment
NameSYMA51
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
HourMarksArabic Numerals, Bars
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 17:31:01

If you see errors or missing data in this entry, please feel free to log in and edit it. Anyone with a Gmail account can log in instantly.