Seiko Cal. 5639 - 183

This Spring Drive model from 1984 features a 41mm PVD Black case. With its 21mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-f634ba9b9515]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

White

Jewels

32j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1984

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