Seiko Cal. 4428 - 239

Seiko 4428-239

The 4428-239 is a sought-after Kinetic piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-57797410bcf0]

Also known as: Bellmatic, World Timer

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
12.1mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Black
Jewels
25j
Frequency
36,000 bph
Power Reserve
44 hours
Year
1991

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