Seiko Cal. 4478 - 673

The 4478-673 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 14.0mm profile, it sits comfortably on most wrists. [seikata-wm-f25a267c7461]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1967

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