Seiko Cal. 6660 - 829

The Seiko 6660-829 represents an important milestone in Seiko's 1977 lineup. Powered by the 6660 caliber with 21j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-4c57d3bd0cb5]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1977

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