Seiko Cal. 6647 - 797

This Automatic model from 1977 features a 44mm Hardlex-Coated Steel case. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-ecf1fac1ce82]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1977

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