is this the one? https://www.amazon.com/Bluetooth-Transmitter-Receiver-Wireless-Headphone/dp/B07MTFRKQM

I use a different version of that hagibis, good range and battery life:

https://www.amazon.com/gp/product/B07MTFRKQM/

It's replaced my kokkia in my edc. The kokkia is the smallest transceiver I've come across, but I hate the proprietary charge port:

https://www.amazon.com/gp/product/B00IQY5XKO/

Here you go! Bluetooth transmitter I saw this a while back in a YouTube video where someone used this to pair AirPods with a 1st gen Classic!