When Apple first announced the Apple Watch Series 8 and second-generation Apple Watch SE, the Apple Watch comparison page said both models supported Bluetooth 5.0, but Apple now says they actually support the newer Bluetooth 5.3 standard.
While Apple’s website still lists the Series 8 and new SE with Bluetooth 5.0 support in some places, MacRumors was able to confirm that both models do offer support Bluetooth 5.3, in the United States at least.
All four iPhone 14 models, the second-generation AirPods Pro, and the Apple Watch Ultra also support Bluetooth 5.3, says Apple.
Bluetooth 5.3 is said to include the LE Audio specification. However, there is no evidence to suggest that Apple has as yet implemented LE Audio in its latest products.