Seiko Cal. 6631 - 951

This Automatic model from 1968 features a 34mm Gold-Plated case. It features a Black dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-2e2a8b7c21ea]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1968

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