Seiko Cal. 4480 - 995

This Spring Drive model from 1978 features a 36mm Hardlex-Coated Steel case. It features a Green dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-7acb9541eab0]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1978

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