Seiko Cal. 6644 - 390

Released in 1967, the Cal. 6644 with design code 390 was part of Seiko's domestic market collection. The Fixed bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-de1ada5a99e8]

Also known as: Goldfeather, Sea Horse

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1967

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