Seiko Cal. 7117 - 531

The Seiko 7117-531 represents an important milestone in Seiko's 1979 lineup. Powered by the 7117 caliber with 24j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-bc9e4e9b62c8]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1979

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