Seiko Cal. 6140 - 640

This Spring Drive model from 1979 features a 41mm Titanium case. With its 20mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-2d519eb2a69d]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

26j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1979

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