Seiko Cal. 3860 - 936

This Spring Drive model from 1980 features a 44mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-9ac1980c0c70]

Also known as: Helmet, Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1980

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