Seiko Cal. 3861 - 884

This Spring Drive model from 1977 features a 45mm Two-Tone case. With its 21mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-5140c048038c]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

33j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1977

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