Not bluetooth, but.... https://www.amazon.com/8Bitdo-Wireless-Gamepad-Original-Genesis-Drive/dp/B07HB1XFQW

I am going to take a wait and see approach. Sega and Retro-Bit don't have a good track record for quality.

I also have preordered 2 8bitdo Genesis controllers https://www.amazon.com/8Bitdo-Wireless-Gamepad-Original-Genesis-Drive/dp/B07HB1XFQW The pricing including receiver was much better on these.

I have been very happy with the quality I received from my other 8bitdo products.