Seiko Cal. 5631 - 303

This Spring Drive model from 1993 features a 39mm Titanium case. It features a Silver dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-2d7192287474]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1993

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