Seiko Cal. 3860 - 448

This Spring Drive model from 1971 features a 38mm Hardlex-Coated Steel case. With its 22mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-8ad5e717ee23]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1971

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