Apple to bring back blood oxygen feature to some smartwatches amid lawsuit
1. Apple receives US approval for blood oxygen feature in watches. 2. Users can monitor levels on Apple Watch Series 9, 10, and Ultra 2. 3. Legal disputes with Masimo over pulse oximetry technology continue. 4. Masimo's legal victories previously halted imports of some Apple watches. 5. Apple previously removed pulse oximetry from US models amid patent issues.