Seiko Cal. 4428 - 918

Seiko 4428-918

The Seiko 4428-918 represents an important milestone in Seiko's 1968 lineup. With its 20mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-1a33cf5b7dab]

Also known as: World Timer, Sea Horse

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
8.1mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
80m
Dial Color
Burgundy
Jewels
19j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1968

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