Seiko Cal. 3865 - 243

This Spring Drive model from 1977 features a 36mm Titanium case. With its 20mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-adf28a9d7b55]

Also known as: Helmet, Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1977

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