Seiko Cal. 5639 - 516

Seiko 5639-516

The 5639-516 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-f2889fa51e54]

Also known as: Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
15.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Champagne
Jewels
35j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1979

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