Seiko Cal. 6647 - 750

This Spring Drive model from 1979 features a 42mm PVD Black case. Powered by the 6647 caliber with 31j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-f3a972010fa0]

Also known as: Goldfeather

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1979

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