Seiko Cal. 4439 - 421

The 4439-421 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4439 caliber with 27j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-bf970e95781c]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1969

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