None of the low cost earbuds I have tried have turned out to be true APTX LL EVEN when advertised as such on the sites. Buyer beware.
I just go wired in bad rain or put my hood up in lighter rain with the Miccus since there is no wire to worry about or...
I like these IP6 rated backphones which are weather resistant which are APTX LL (but need a special firmware update to get there so PM me) but they are not inexpensive nor good in cold rain/weather since they are on the ear phones.
https://www.amazon.com/gp/product/B01M8M4R7K/?tag=treasurenet01-20
The following are supposedly APTX LL but have decided to stop rolling the dice:
https://www.amazon.com/gp/product/B07KLWS43V/?tag=treasurenet01-20
https://www.amazon.com/gp/product/B07JQSQ5V6/?tag=treasurenet01-20
HH