Seiko Cal. 4430 - 380

This Spring Drive model from 1971 features a 40mm Titanium case. With its 18mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-d4ac3baf807f]

Also known as: Helmet, Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1971

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