Seiko Cal. 5617 - 656

This Spring Drive model from 1990 features a 43mm Stainless Steel case. It features a Burgundy dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-dfd403979feb]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

25j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1990

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