Seiko Cal. 6644 - 940

This Spring Drive model from 1967 features a 43mm Hardlex-Coated Steel case. Powered by the 6644 caliber with 20j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-54f1602e8be9]

Also known as: Pogue

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

20j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1967

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