Seiko Cal. 6646 - 439

This Quartz model from 1971 features a 39mm Hardlex-Coated Steel case. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-e0925d25bc03]

Also known as: Helmet, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Champagne

Jewels

24j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1971

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