Seiko Cal. 4487 - 420

Seiko 4487-420

The 4487-420 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-cb589d7c3ab1]

Also known as: Turtle, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
10.7mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Blue Sunburst
Jewels
36j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1976

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seikata-wm-cb589d7c3ab1