Seiko Cal. 7172 - 640

Seiko 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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