Seiko Cal. 6639 - 592

The Seiko 6639-592 represents an important milestone in Seiko's 1989 lineup. Powered by the 6639 caliber with 17j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-0523d70187ae]

Also known as: Tuna, Helmet

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1989

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