A previous import ban was issued due to infringement on patents related to blood-oxygen measurement technology. This action was taken to protect the intellectual property rights associated with these innovative medical devices. The ban aimed to prevent unauthorized products from entering the market, ensuring that patent holders maintain exclusive control over their patented technology.
https://www.inc.com/reuters/u-s-trade-tribunal-to-consider-new-apple-watch-import-ban/91266281
U.S. Trade Tribunal to Consider New Apple Watch Import Ban