Seiko Cal. 5639 - 944

This Automatic model from 1985 features a 44mm Titanium case. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-c9bbb3eefdb7]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1985

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