Seiko Cal. 5641 - 441

This Spring Drive model from 1971 features a 37mm Hardlex-Coated Steel case. It features a Black dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-464f9ead0750]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1971

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