Seiko Cal. 6331 - 253

The Seiko 6331-253 represents an important milestone in Seiko's 1975 lineup. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-1d9955491c43]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1975

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