Seiko Cal. 6642 - 573

The Seiko 6642-573 represents an important milestone in Seiko's 1978 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-50cf7ee24464]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1978

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