Seiko Cal. 3816 - 634

This Spring Drive model from 1981 features a 36mm Gold-Plated case. With its 20mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-ea11a1236da9]

Also known as: Shogun, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1981

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