I bought this one a few months ago and it’s been working great. I use it via the optical input, but it also supports 3.5mm. And it does not use batteries, power is via USB (either from your TV or a small phone charger).
Yes, it has a cheap look and feel, but so far has been rock solid. Note that unless you have those special loss latency ear buds, there will be a slight audio delay relative to the picture on the TV.
Avantree Audikast Plus Bluetooth... https://www.amazon.com/dp/B07TLHRPDP?ref=ppx_pop_mob_ap_share