Seiko Cal. 6644 - 747

This Quartz model from 1975 features a 34mm Hardlex-Coated Steel case. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-cb1b3d3d29bd]

Also known as: Helmet, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1975

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