Seiko Cal. 7172 - 948

This Spring Drive model from 1972 features a 37mm Hardlex-Coated Steel case. Powered by the 7172 caliber with 24j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-4c7189e00c30]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

White

Jewels

24j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1972

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