Seiko Cal. 6657 - 571

This Spring Drive model from 1997 features a 37mm PVD Black case. It features a Green dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-becb2a0ea0a6]

Also known as: Shogun, World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1997

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