Seiko Cal. 6631 - 744

This Spring Drive model from 1986 features a 34mm Two-Tone case. It features a Cream dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-283a93df5e4d]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Cream

Jewels

36j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1986

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