Seiko Cal. 6331 - 586

The Seiko 6331-586 represents an important milestone in Seiko's 1973 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-6f24e8e7bee7]

Also known as: Navigator, Flighty

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1973

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