Seiko Cal. 5631 - 565

The Seiko 5631-565 represents an important milestone in Seiko's 1967 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-3d6d890b38a7]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1967

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