Seiko Cal. 7155 - 231

The Seiko 7155-231 represents an important milestone in Seiko's 1976 lineup. Powered by the 7155 caliber with 19j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-8c74f04f72f7]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1976

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