Seiko Cal. 4487 - 820

Seiko 4487-820

The 4487-820 is a sought-after Kinetic piece from Seiko's golden era. With its 19mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-fc70e8d59aee]

Also known as: Sumo, Baby Tuna

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
42mm
Case Thickness
14.8mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Navy
Jewels
36j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1990

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