Seiko Cal. 6639 - 649

The 6639-649 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6639 caliber with 34j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-73d955b63bf5]

Also known as: Shogun, Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1987

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