Seiko Cal. 5231 - 918

This Hand-Winding model from 1985 features a 40mm Gold-Plated case. It features a Silver dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-8dcdec84eaea]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1985

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