being able to work the guns. The Waterbury Clock Company met this need by modifying their small Ingersoll ladies' Midget pocket watch. They added lugs for a canvas strap, repositioned the crown to 3 o'clock, and made the hands and numbers luminescent for nighttime readability, thus producing one of the first wristwatches.

In 1922, Waterbury Clock Company purchased the Robert H. Ingersoll & Bro. company for $1.5 million. The firm had gone bankrupt the previous year due to the post-war recession.