Seiko Cal. 4423 - 904

Seiko 4423-904

The Seiko 4423-904 represents an important milestone in Seiko's 1993 lineup. Powered by the 4423 caliber with 33j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-99d8a7988b22]

Also known as: Monster, Sumo

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
36mm
Case Thickness
11.4mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
110m
Dial Color
Green
Jewels
33j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1993

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