Seiko Cal. 5617 - 658

This Spring Drive model from 1978 features a 38mm Stainless Steel case. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-c186bb289a87]

Also known as: Bullhead, Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Cream

Jewels

24j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1978

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