Seiko Cal. 3863 - 496

This Spring Drive model from 1978 features a 39mm Two-Tone case. With its 19mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-440a2dffd7b8]

Also known as: Bellmatic, World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1978

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