Seiko Cal. 6639 - 522

The Seiko 6639-522 represents an important milestone in Seiko's 1972 lineup. Powered by the 6639 caliber with 22j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-dec78dd24ecc]

Also known as: UFO, Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1972

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