Seiko Cal. 6640 - 529

This Spring Drive model from 1981 features a 42mm Stainless Steel case. It features a Silver dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-5454c0ac5379]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1981

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