Seiko Cal. 3812 - 690

This Spring Drive model from 1965 features a 34mm Hardlex-Coated Steel case. It features a Cream dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-f44dd58adbeb]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1965

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