Seiko Cal. 6661 - 723

The Seiko 6661-723 represents an important milestone in Seiko's 1976 lineup. Powered by the 6661 caliber with 20j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-42c702136d7e]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1976

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