Hi Shay,
The link is here Specsavers Advance Elite
But this does relate to the Advance Elite that I bought in England, which is a white label Unitron.
Good luck. I understand your concern about the rechargeables and I know the Paradise comes with a 312 battery as one of its options.
I don’t think you will lose any functionality on the device or app. Specsavers are provided with their own version of the app by Sonova. And there should be no major features that are not present. Maybe it will not have tinnitus support/masking.