Seiko Cal. 6639 - 650

Released in 1965, the Cal. 6639 with design code 650 was part of Seiko's domestic market collection. Powered by the 6639 caliber with 33j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-cb873588f39e]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1965

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