Seiko Cal. 7121 - 224

This Spring Drive model from 1968 features a 34mm Hardlex-Coated Steel case. Powered by the 7121 caliber with 18j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-55862c3ce919]

Also known as: Monster, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1968

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