Seiko Cal. 6378 - 120

This Spring Drive model from 1980 features a 46mm Gold-Plated case. Powered by the 6378 caliber with 25j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-7097b55445c3]

Also known as: Sumo, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1980

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