Seiko Cal. 6644 - 690

This Quartz model from 1971 features a 39mm Hardlex-Coated Steel case. It features a Cream dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-4c91e28e2d99]

Also known as: Rally, Flighty

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1971

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