Seiko Cal. 4491 - 967

This Spring Drive model from 1975 features a 42mm Two-Tone case. It features a Green dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-f001ea111e98]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1975

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