Seiko Cal. 6628 - 636

The Seiko 6628-636 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-67555cfa0048]

Also known as: Samurai, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1971

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