Seiko Cal. 5657 - 661

This Spring Drive model from 1991 features a 40mm PVD Black case. With its 19mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-2eaa072b3d0e]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1991

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