Seiko Cal. 6639 - 690

This Hand-Winding model from 1974 features a 38mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-b4b203c1ad81]

Also known as: Rally, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1974

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