Seiko Cal. 5677 - 640

This Spring Drive model from 1974 features a 43mm Stainless Steel case. It features a White dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-023daae392fd]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1974

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