Seiko Cal. 5231 - 401

This Spring Drive model from 1986 features a 46mm Titanium case. With its 19mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-8fdb8aa6438c]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1986

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