Apple Watch Ultra 3 VS Amazon Echo (Alexa)
Verdict DROP IT DROP IT
The Reality The feature has a real, documented history of simply not being available to US buyers. After the US International Trade Commission ruled the blood oxygen sensor infringed two Masimo patents, Apple disabled blood oxygen sensing on US-sold Apple Watches in January 2024 to keep selling the watch at all, and it stayed off for roughly a year and a half. In August 2025 Apple restored a redesigned version -- but the workaround processes the sensor's raw data on a paired iPhone rather than the watch itself, and results can only be viewed on the iPhone, not the watch face. The ITC formally closed the case in April 2026, ending Masimo's ability to revive the ban, but the underlying legal fight ran for over two years. The FTC and Department of Justice found Amazon violated the Children's Online Privacy Protection Act (COPPA) by retaining children's Alexa voice recordings indefinitely -- keeping them for years -- and undermining parents' actual deletion requests: even when a parent asked Amazon to delete a child's data, the company failed to delete transcripts of what the child had said from all of its internal databases. Amazon agreed to pay a $25 million civil penalty in May 2023 and is now required to overhaul its deletion practices, delete inactive children's Alexa accounts, and implement new privacy safeguards around geolocation data.
SHORT ANSWER
Apple Watch Ultra 3: Apple Watch's blood oxygen feature was legally disabled for US buyers for about 20 months (January 2024-August 2025) after Apple lost a patent case to Masimo, and its restored version now only works by processing data on a paired iPhone rather than the watch itself.
Amazon Echo (Alexa): The FTC and DOJ found Amazon retained children's Alexa voice recordings indefinitely and failed to honor parents' deletion requests across its systems, resulting in a $25 million COPPA settlement in 2023 and a mandated overhaul of its deletion practices.