Seiko Cal. 6639 - 808

The Seiko 6639-808 represents an important milestone in Seiko's 1979 lineup. Powered by the 6639 caliber with 31j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-880504626c78]

Also known as: Turtle, Sumo

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1979

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