Seiko Cal. 6331 - 980

The Seiko 6331-980 represents an important milestone in Seiko's 1985 lineup. Powered by the 6331 caliber with 25j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-e9421ce71fd6]

Also known as: Navigator, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1985

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