Seiko Cal. 5657 - 670

This Spring Drive model from 1994 features a 39mm Stainless Steel case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-993359cfae64]

Also known as: Bullhead, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1994

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