Seiko Cal. 3878 - 284

This Hand-Winding model from 1971 features a 40mm Gold-Plated case. With its 21mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-c52ad5997b20]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1971

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