Seiko Cal. 7181 - 180

The Seiko 7181-180 represents an important milestone in Seiko's 1975 lineup. Powered by the 7181 caliber with 36j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-dbe97563ebc2]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1975

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