Seiko Cal. 4556 - 427

Seiko 4556-427

The 4556-427 is a sought-after Hand-Winding piece from Seiko's golden era. With its 20mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-25f9dd9288cb]

Also known as: Monster, Silverwave

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
40mm
Case Thickness
12.0mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Silver
Jewels
18j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1978

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seikata-wm-25f9dd9288cb