Seiko Cal. 5278 - 670

This Spring Drive model from 1976 features a 43mm Two-Tone case. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-dbc55ab0736e]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Cream

Jewels

27j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1976

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