Seiko Cal. 0731 - 940

This Automatic model from 1989 features a 37mm Two-Tone case. With its 18mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-55831ea235e8]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1989

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