Seiko Cal. 6312 - 621

The Seiko 6312-621 represents an important milestone in Seiko's 1975 lineup. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-cd7157aba29b]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1975

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