Seiko Cal. 6644 - 320

This Spring Drive model from 1976 features a 34mm Gold-Plated case. Powered by the 6644 caliber with 33j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-720bf83f0f19]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1976

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