Seiko Cal. 5639 - 517

This Spring Drive model from 1983 features a 37mm Titanium case. Powered by the 5639 caliber with 18j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-914b1c7ebb6f]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1983

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