Seiko Cal. 4415 - 590

This Spring Drive model from 1978 features a 36mm Hardlex-Coated Steel case. It features a Cream dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-fed5d30bcab8]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1978

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