Seiko Cal. 6639 - 655

The Seiko 6639-655 represents an important milestone in Seiko's 1981 lineup. With its 19mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-78f8fac09157]

Also known as: Flighty

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

19j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1981

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