I don’t stream with them,
They are hearing aids. Everything other function is a gimmick.
They have a speaker that’s approximately 2mm in diameter. The audio is reminiscent of those single in-ear earpieces that came with transistor radios years ago.
If I want to listen to music, etc., I put on over-the-ear headphones that fit over my hearing aids to get full fidelity (at least as much fidelity that my hearing loss will allow).