Seiko Cal. 6231 - 390

This Spring Drive model from 1966 features a 34mm Hardlex-Coated Steel case. It features a Cream dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-e7fb4e9e58a1]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1966

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