Seiko Cal. 6144 - 739

This Spring Drive model from 1966 features a 40mm Gold-Plated case. Powered by the 6144 caliber with 20j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-3095f48d2d3b]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1966

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