Seiko Cal. 7143 - 639

Released in 1975, the Cal. 7143 with design code 639 was part of Seiko's domestic market collection. With its 18mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-52180cfb21db]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1975

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