Seiko Cal. 6131 - 634

This Spring Drive model from 1978 features a 34mm Stainless Steel case. It features a Cream dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-a8cdcc13f664]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1978

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