Seiko Cal. 3896 - 580

This Spring Drive model from 1982 features a 40mm Titanium case. It features a Green dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-5e26f2aa7c27]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1982

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