Seiko Cal. 4428 - 781

Seiko 4428-781

This Quartz model from 1966 features a 46mm Hardlex-Coated Steel case. With its 22mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-75fae55e627b]

Also known as: Monster, Bellmatic

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
12.2mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
110m
Dial Color
Blue Sunburst
Jewels
24j
Frequency
21,600 bph
Power Reserve
43 hours
Year
1966

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