Seiko Cal. 7139 - 818

This Spring Drive model from 1988 features a 44mm Hardlex-Coated Steel case. It features a Cream dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-3b56dddae811]

Also known as: Monster, Silverwave

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1988

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