Seiko Cal. 7181 - 188

The 7181-188 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-c02b7d7e859d]

Also known as: Monster, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1971

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