Seiko Cal. 6391 - 320

This Kinetic model from 1990 features a 40mm Two-Tone case. With its 21mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-ae18cbbe093c]

Also known as: Sumo, Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

22j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1990

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