Seiko Cal. 6166 - 554

This Spring Drive model from 1979 features a 42mm Hardlex-Coated Steel case. Powered by the 6166 caliber with 23j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-36ce4b939fc0]

Also known as: Sumo, Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1979

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