Seiko Cal. 3880 - 436

This Spring Drive model from 1972 features a 40mm Hardlex-Coated Steel case. It features a Black dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-07ae04bd3c65]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1972

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