Seiko Cal. 3878 - 306

This Spring Drive model from 1990 features a 46mm PVD Black case. With its 22mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-d4997bbe4fc5]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1990

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