Seiko Cal. 7178 - 635

Seiko 7178-635

The 7178-635 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-b80e62167fe8]

Also known as: Helmet, Emperor

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
10.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
18j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1970

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