Seiko Cal. 7131 - 560

This Automatic model from 1978 features a 43mm Two-Tone case. With its 18mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-df59ae9de65e]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1978

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