Default [Q] How to know the version of bluetooth audio receiver programmatically?

Audio adapter brand is SC Z-100, it was bought on EBay. Manufactured in China.

The adapter allows me to play music files from my tablet on my main amp wirelessly. The adapter works normally (DAC so-so quality).

Adapter Package Box and Manual listed Bluetooth version 2.1. The label on the back of the adapter body indicates V3.0.

Q: Subj