Seiko Cal. 7181 - 378

The 7181-378 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 7181 caliber with 36j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-0394609645ac]

Also known as: Sumo, Sea Horse

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1974

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