Seiko Cal. 5231 - 860

The 5231-860 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-5e657cc9e6ce]

Also known as: Bullhead, Arnie

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1989

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