Seiko Cal. 4428 - 641

Seiko 4428-641

This Kinetic model from 1981 features a 42mm Hardlex-Coated Steel case. With its 19mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-98ba6d19a033]

Also known as: Baby Tuna

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
9.5mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Burgundy
Jewels
28j
Frequency
36,000 bph
Power Reserve
71 hours
Year
1981

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seikata-wm-98ba6d19a033