Seiko Cal. 6642 - 339

This Automatic model from 1974 features a 37mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-259e7cd7db2e]

Also known as: Helmet, Crown

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1974

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