Seiko Cal. 0731 - 636

Released in 1978, the Cal. 0731 with design code 636 was part of Seiko's domestic market collection. It features a Navy dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-febbf2ec8a1e]

Also known as: Pogue

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1978

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