Seiko Cal. 5639 - 432

Released in 1981, the Cal. 5639 with design code 432 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-bdabb87abf20]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1981

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