Seiko Cal. 6639 - 773

The 6639-773 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6639 caliber with 21j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-9ff9f86c5e1c]

Also known as: Rally

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1971

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