Seiko Cal. 6680 - 578

The Seiko 6680-578 represents an important milestone in Seiko's 1972 lineup. Powered by the 6680 caliber with 21j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-98535a6c1a05]

Also known as: Rally

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1972

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