Seiko Cal. 3820 - 351

This Spring Drive model from 1978 features a 42mm PVD Black case. With its 21mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-181f96eab4ba]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1978

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