Seiko Cal. 4439 - 728

Seiko 4439-728

The 4439-728 is a sought-after Kinetic piece from Seiko's golden era. With its 20mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-f409870e5e3e]

Also known as: Goldfeather

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
15.0mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Navy
Jewels
35j
Frequency
21,600 bph
Power Reserve
50 hours
Year
1979

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