Seiko Cal. 6639 - 822

The 6639-822 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6639 caliber with 20j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-0912ba12e44c]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1975

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