Seiko Cal. 5639 - 420

The 5639-420 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5639 caliber with 20j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-f7dda16d3789]

Also known as: Pogue

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1985

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