Seiko Cal. 5657 - 374

This Hand-Winding model from 1979 features a 39mm PVD Black case. Powered by the 5657 caliber with 21j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-60139ff65848]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1979

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