Apple changed port, Apple Watch Series 8 and SE 2 both support Bluetooth 5.3
CTOnews.com, September 21, when Apple Watch Series 8 and the second-generation Apple Watch SE were unveiled, Apple's website showed that both models could only support Bluetooth 5.0, but Apple now says they actually support the newer Bluetooth 5.3 standard.
CTOnews.com has learned that Apple has officially confirmed that the two models support Bluetooth 5.3 at least in the United States. In other words, versions in other markets may support up to Bluetooth 5. 0.
According to Apple, Bluetooth 5.3 is supported on all iPhone 14 series models, second-generation AirPods Pro and Apple Watch Ultra.
According to reports, Bluetooth 5.3 has "a number of feature enhancements to improve the reliability, battery life and user experience of a variety of Bluetooth products", such as the LE Audio audio specification, but there is no evidence that Apple supports LE Audio audio in its latest products.