Seiko Cal. 4427 - 739

The 4427-739 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-e73366badd9e]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1987

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