Seiko Cal. 4427 - 586

The 4427-586 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-83d34723d88a]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1968

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