Seiko Cal. 3818 - 863

This Spring Drive model from 1966 features a 39mm Gold-Plated case. With its 19mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-116efe6fac43]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1966

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