Seiko Cal. 4439 - 428

The 4439-428 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-b6ae591b977f]

Also known as: UFO, Rally

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Champagne

Jewels

17j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1983

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