Seiko Cal. 6689 - 727

The Seiko 6689-727 represents an important milestone in Seiko's 1975 lineup. Powered by the 6689 caliber with 29j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-f57da0f27baa]

Also known as: Shogun, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

29j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1975

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