Seiko Cal. 3816 - 176

This Spring Drive model from 1977 features a 35mm Gold-Plated case. With its 20mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-bf4587b8c711]

Also known as: Monster, Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1977

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