Seiko Cal. 6639 - 447

The 6639-447 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6639 caliber with 24j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-4dccb6cc879b]

Also known as: Shogun

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1968

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