Seiko Cal. 4428 - 642

Seiko 4428-642

The 4428-642 is a sought-after Kinetic piece from Seiko's golden era. With its 20mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-a0b5ca997d75]

Also known as: Tuna

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
11.4mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Champagne
Jewels
21j
Frequency
36,000 bph
Power Reserve
48 hours
Year
1989

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