https://www.aliexpress.us/item/3256812758772320.html?gatewayAdapt=glo2usa

5181pro, that uses the qcc5181 BT chip. Then I have mmcx to .78 2pin ear loops (you can find them for like $5). This allows me to swap out to other pin outs as well if I ever get IEMs with different pinouts than the most common (.78). The battery lasts me two days of 8-10 hour listening and they're decently well built. Way way stronger than the single cord ones you can get for cheaper. There is a 8 core braided one that nutty on YT suggestes to get but he suggested it back when it was $80 now it's $130ish and that was just way to much for my taste.