Seiko Cal. 6644 - 289

This Automatic model from 1973 features a 37mm Hardlex-Coated Steel case. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-6254e4bf0ccb]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1973

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