Seiko Cal. 6639 - 990

The 6639-990 is a sought-after Kinetic piece from Seiko's golden era. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-d74e72a64f21]

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1968

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