Seiko Cal. 4428 - 187

Seiko 4428-187

This Spring Drive model from 1972 features a 35mm Titanium case. With its 19mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-57b945330d61]

Also known as: Navigator

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
35mm
Case Thickness
9.3mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Champagne
Jewels
32j
Frequency
21,600 bph
Power Reserve
55 hours
Year
1972

Related Models

seikata-wm-57b945330d61