Seiko Cal. 6662 - 137

This Spring Drive model from 1968 features a 40mm Gold-Plated case. Powered by the 6662 caliber with 21j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-b15ece9f69b0]

Also known as: Sumo, Rally

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1968

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