Seiko Cal. 7172 - 640

This Spring Drive model from 1988 features a 34mm Stainless Steel case. Powered by the 7172 caliber with 33j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-b67739a9294c]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1988

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