Seiko Cal. 7181 - 891

Seiko 7181-891

The 7181-891 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-76fb117d0a66]

Also known as: Helmet, Sportsmatic

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
15.7mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
80m
Dial Color
Blue Sunburst
Jewels
30j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1993

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