Seiko Cal. 6331 - 386

This Hand-Winding model from 1980 features a 34mm Titanium case. With its 19mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-fba17d3a5470]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1980

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