Seiko Cal. 5644 - 936

The Seiko 5644-936 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-32a141853b98]

Also known as: Navigator, Arnie

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Champagne

Jewels

26j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1971

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