Seiko Cal. 3827 - 580

This Spring Drive model from 1974 features a 37mm Hardlex-Coated Steel case. With its 22mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-40751f582c33]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1974

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