Hey there vvenkyy,
I apologize about the late response on this, thank you for being patient! Were you able to find those specifications? If not, I'd be happy to help out! For Bluetooth in particular, the Chromecast uses Bluetooth 4.2, and here is a list of all supported media types that our Chromecast devices can use.
I hope that helps you out! If you have any other questions or concerns for me, please let me know.