I just brought them off ebay and have not received them as yet so that’s going to be interesting.
I uploaded the pics from ebay

I also found a data sheet at
https://www.wsaud.com/advance/9
You probably know about it, but this site has datasheets on just about every hearing aid made.
I cannot upload .pdf so you go to the site and click the search button and scroll down till you come to DS_RIC_LI_x80_EN.pdf
I brought my last hearing aids from specsavers, they were made by Bernafon model Specsavers 290 AO1 MNR T and a man in china had software that had the same model code AO1 MNR T and the software Audina OASISnxt 2022.2 worked so maybe it is something like that with these aids.