Seiko Cal. 3817 - 231

The Seiko 3817-231 represents an important milestone in Seiko's 1976 lineup. With its 19mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-226cccc25f90]

Also known as: Samurai, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1976

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