Seiko Cal. 4428 - 556

Seiko 4428-556

The 4428-556 is a sought-after Solar piece from Seiko's golden era. With its 19mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-8000bf249314]

Also known as: Helmet

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
10.1mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
180m
Dial Color
Burgundy
Jewels
32j
Frequency
21,600 bph
Power Reserve
59 hours
Year
1977

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seikata-wm-8000bf249314