Seiko Cal. 6659 - 283

This Spring Drive model from 1979 features a 39mm Hardlex-Coated Steel case. Powered by the 6659 caliber with 28j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-bfc70fcfc043]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1979

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