The next Apple Watch may be missing a headline health feature

Apple’s very public dispute with health device maker Masimo has got tongues wagging over the possibility of the Apple Watch – one of the best smartwatches in the world – being banned in the US. As a result, Apple has had to disable blood oxygen monitoring features on its devices – and that could have serious implications for other planned features.As Bloomberg journalist Mark Gurman notes in his latest Power On newsletter, sleep apnea tracking – a key feature

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