Seiko Cal. 6331 - 300

The Seiko 6331-300 represents an important milestone in Seiko's 1991 lineup. It features a Black dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-ca81477ef184]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1991

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