Seiko Cal. 3898 - 305

This Spring Drive model from 1971 features a 40mm Hardlex-Coated Steel case. It features a Champagne dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-35999ffe2b8e]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Champagne

Jewels

24j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1971

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