Seiko Cal. 4420 - 973

Released in 1990, the Cal. 4420 with design code 973 was part of Seiko's domestic market collection. With its 18mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-9ad2ef8e8c00]

Also known as: Tuna, Rally

Specifications

Movement

Solar

Case Material

Titanium

Case Width

43mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

18j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1990

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