Seiko Cal. 4583 - 721

Seiko 4583-721

The Seiko 4583-721 represents an important milestone in Seiko's 1984 lineup. Powered by the 4583 caliber with 27j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-514d31f4ad29]

Also known as: Helmet

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
46mm
Case Thickness
10.3mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
190m
Dial Color
Navy
Jewels
27j
Frequency
21,600 bph
Power Reserve
37 hours
Year
1984

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seikata-wm-514d31f4ad29