Seiko Cal. 5231 - 880

This Spring Drive model from 1978 features a 34mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-b3c91261e4a6]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1978

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