Seiko Cal. 4473 - 638

Seiko 4473-638

The 4473-638 is a sought-after Automatic piece from Seiko's golden era. With its 19mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-c20e24f664d0]

Also known as: Bullhead, UFO

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
46mm
Case Thickness
8.6mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Navy
Jewels
27j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1973

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