Seiko Cal. 6639 - 140

The 6639-140 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6639 caliber with 21j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-b940283c9813]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1987

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