SKS193P

Model: SKS193
Special price US$125
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Seiko Tachymeter
Model : V657-8120S Caliber V657

100m water resistant. Directional bearing on bezel. Dial tachymeter. Specifications: Caliber V657
Frequency of crystal oscillator:
32,768Hz=hertz cycles per second
Loss/gain ( monthly rate):>15seconds at normal temperature range(5c~35c)

Battery: Seiko SR927W, 1 unit
Integrated circuit: C-MOS-LSI
Degree of water resistant: 100m