Seiko Cal. 5664 - 557

This Spring Drive model from 1983 features a 34mm PVD Black case. Powered by the 5664 caliber with 20j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-92a22bd66115]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1983

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