Seiko Cal. 6331 - 427

The Seiko 6331-427 represents an important milestone in Seiko's 1978 lineup. It features a Cream dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-6b8ec6439b14]

Also known as: Navigator, Sea Horse

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Cream

Jewels

30j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1978

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