Seiko Cal. 6644 - 377

This Spring Drive model from 1968 features a 46mm Hardlex-Coated Steel case. It features a Navy dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-fd98baab3d80]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1968

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