Seiko Cal. 6671 - 727

This Spring Drive model from 1987 features a 44mm Gold-Plated case. Powered by the 6671 caliber with 30j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-762a59c514aa]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1987

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