Looks like a HifionRC HF_Nano which is a bluetooth module ... generally for telemetry / configuration.
Ads for it say that Betaflight has support for it.
It seems that you are finding that this drone has some add-on features/pieces that are supported by Betaflight. To get full use of all the pieces, you should consider using the firmware / software that it came with and that is probably Betaflight.