Seiko Cal. 7156 - 810

The Seiko 7156-810 represents an important milestone in Seiko's 1972 lineup. Powered by the 7156 caliber with 30j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-d69254ceb28e]

Also known as: Shogun, Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1972

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