Seiko Cal. 4425 - 635

Seiko 4425-635

The 4425-635 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-02af32d21064]

Also known as: Bullhead, Helmet

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
13.7mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
30m
Dial Color
Black
Jewels
33j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1980

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