Seiko Cal. 3810 - 158

This Spring Drive model from 1974 features a 36mm Hardlex-Coated Steel case. With its 21mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-518957602a57]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1974

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