Seiko Cal. 6669 - 731

The Seiko 6669-731 represents an important milestone in Seiko's 1973 lineup. Powered by the 6669 caliber with 23j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-45790937dfbc]

Also known as: Sumo, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1973

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