Widex evoke receivers

Hello my evoke 440 F2 RIC hearing aids have just arrived and I have programmed them and all is working great, I can’t wait to try them out at a restaurant to see how much better they are than my dream 440s. I have a question about the receivers I telephoned to widex here in Czech and they informed me that the receivers for my new HAs are the V2 new types and I asked if the old type would fit and they replied that the connectors are different. As I did not have a v2 Power receiver I unplugged the receiver which had been supplied and found that the old one from my dream fits and works just fine, so my question is whether the evoke use V2 or the old receivers and what is the difference, thanks in advance for your attention

could be, these evoke F2 have BT though