Seiko Cal. 5639 - 930

The Seiko 5639-930 represents an important milestone in Seiko's 1973 lineup. Powered by the 5639 caliber with 36j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-2bb28fd6cc40]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

36j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1973

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