Seiko Cal. 4427 - 860

Seiko 4427-860

The 4427-860 is a sought-after Hand-Winding piece from Seiko's golden era. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-b713155be905]

Also known as: World Timer

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
42mm
Case Thickness
13.8mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
80m
Dial Color
Black
Jewels
30j
Frequency
36,000 bph
Power Reserve
62 hours
Year
1978

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