Seiko Cal. 6331 - 551

The Seiko 6331-551 represents an important milestone in Seiko's 1981 lineup. With its 19mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-1977569de09f]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1981

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