Seiko Cal. 6239 - 337

This Spring Drive model from 1979 features a 35mm Hardlex-Coated Steel case. Powered by the 6239 caliber with 31j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-3cc74ca1f349]

Also known as: Monster, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1979

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