Seiko Cal. 6687 - 698

The Seiko 6687-698 represents an important milestone in Seiko's 1973 lineup. Powered by the 6687 caliber with 31j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-638e87e1a556]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1973

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