Seiko Cal. 6331 - 571

This Kinetic model from 1969 features a 39mm Two-Tone case. With its 20mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-a8baadf9a6e1]

Also known as: Sea Horse, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1969

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