Seiko Cal. 5639 - 620

The Seiko 5639-620 represents an important milestone in Seiko's 1972 lineup. Powered by the 5639 caliber with 18j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-a93bc3809a84]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

18j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1972

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