Seiko Cal. 3847 - 978

The Seiko 3847-978 represents an important milestone in Seiko's 1983 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-a52e9330952b]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1983

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