Seiko Cal. 4437 - 881

Seiko 4437-881

The 4437-881 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-88c44e4b3981]

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
9.1mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
160m
Dial Color
Green
Jewels
21j
Frequency
21,600 bph
Power Reserve
43 hours
Year
1990

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seikata-wm-88c44e4b3981