Seiko Cal. 3834 - 878

This Spring Drive model from 1972 features a 40mm PVD Black case. It features a White dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-3caa25a10e40]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1972

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