Seiko Cal. 6639 - 928

Released in 1965, the Cal. 6639 with design code 928 was part of Seiko's domestic market collection. With its 19mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-47f2cfb80cdc]

Also known as: Rally, World Timer

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

32j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1965

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