Seiko Cal. 6639 - 864

The 6639-864 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6639 caliber with 27j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-182c85f88a4b]

Also known as: Monster, Emperor

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1981

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