Seiko Cal. 4428 - 871

Seiko 4428-871

The Seiko 4428-871 represents an important milestone in Seiko's 1973 lineup. With its 20mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-cceb2f70122e]

Also known as: Monster, Bullhead

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
12.6mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
140m
Dial Color
Silver
Jewels
26j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1973

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