Seiko Cal. 4420 - 634

Seiko 4420-634

The 4420-634 is a sought-after Automatic piece from Seiko's golden era. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-eb316f1fa2e3]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
44mm
Case Thickness
12.7mm
Lug Width
22mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
80m
Dial Color
Cream
Jewels
18j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1995

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