Seiko Cal. 5657 - 600

This Spring Drive model from 1968 features a 41mm PVD Black case. With its 19mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-c95daee4a9cb]

Also known as: Samurai, Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1968

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