Seiko Cal. 6311 - 748

This Automatic model from 1976 features a 37mm Stainless Steel case. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-ca340c5be325]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

34j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1976

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