Seiko Cal. 5630 - 728

Seiko 5630-728

The 5630-728 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5630 caliber with 25j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-b004e72ac2fb]

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
9.6mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
100m
Dial Color
White
Jewels
25j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1981

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