Seiko Cal. 4420 - 448

Seiko 4420-448

The 4420-448 is a sought-after Solar piece from Seiko's golden era. With its 20mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-5c1364f4378a]

Also known as: Bullhead, Sportsmatic

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
42mm
Case Thickness
14.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
110m
Dial Color
Burgundy
Jewels
20j
Frequency
36,000 bph
Power Reserve
65 hours
Year
1973

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