Seiko Cal. 4428 - 671

Seiko 4428-671

This Automatic model from 1982 features a 45mm PVD Black case. Powered by the 4428 caliber with 28j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-9575ba1d7d2a]

Also known as: Monster, Tuna

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
45mm
Case Thickness
15.6mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
160m
Dial Color
Cream
Jewels
28j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1982

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