Seiko Cal. 6639 - 488

Released in 1980, the Cal. 6639 with design code 488 was part of Seiko's domestic market collection. With its 19mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-770fb74eaf82]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1980

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