Seiko Cal. 5645 - 909

This Spring Drive model from 1971 features a 38mm Hardlex-Coated Steel case. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-863cbcd42858]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1971

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