Seiko Cal. 7155 - 178

The Seiko 7155-178 represents an important milestone in Seiko's 1966 lineup. Powered by the 7155 caliber with 20j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-14af7f291807]

Also known as: Tuna, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1966

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