Seiko Cal. 4522 - 728

Seiko 4522-728

The 4522-728 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4522 caliber with 26j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-3ec276324ee2]

Also known as: Baby Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
44mm
Case Thickness
12.7mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
40m
Dial Color
Champagne
Jewels
26j
Frequency
28,800 bph
Power Reserve
69 hours
Year
1999

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seikata-wm-3ec276324ee2