Seiko Cal. 6639 - 446

Released in 1973, the Cal. 6639 with design code 446 was part of Seiko's domestic market collection. Powered by the 6639 caliber with 31j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-f531ce481ad5]

Also known as: Samurai, Panda

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1973

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