Seiko Cal. 3878 - 957

This Quartz model from 1986 features a 38mm PVD Black case. With its 20mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-d786c72550bc]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1986

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