Seiko Cal. 7187 - 981

The Seiko 7187-981 represents an important milestone in Seiko's 1967 lineup. Powered by the 7187 caliber with 20j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-bd1148cfb5ad]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1967

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