Seiko Cal. 4428 - 890

Seiko 4428-890

The 4428-890 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4428 caliber with 30j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-1dbc1447f056]

Also known as: Shogun, Emperor

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
40mm
Case Thickness
12.8mm
Lug Width
19mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
40m
Dial Color
Cream
Jewels
30j
Frequency
21,600 bph
Power Reserve
70 hours
Year
1966

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