Seiko Cal. 3861 - 847

This Spring Drive model from 1989 features a 43mm Stainless Steel case. It features a Green dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-5807f3dfee1e]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1989

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