Seiko Cal. 7178 - 270

The Seiko 7178-270 represents an important milestone in Seiko's 1971 lineup. Powered by the 7178 caliber with 27j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-b81ab0759fa7]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

27j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1971

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