Seiko Cal. 5639 - 658

The Seiko 5639-658 represents an important milestone in Seiko's 1983 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-8f26201d022e]

Also known as: World Timer, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1983

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