Seiko Cal. 5633 - 866

This Spring Drive model from 1968 features a 34mm Gold-Plated case. It features a Cream dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-8a8065850aeb]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1968

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