Review on Anker Soundsync A3352 Bluetooth Receiver for Music Streaming with Bluetooth 5.0, Extended 12-Hour Battery Life, Handsfree Calls, Dual Device Connection, Ideal for Car, Home Stereo, Headphones, Speakers by Mike Betzing

It's not bad but it seems to me that it's a temporary solution and therefore it's not completely perfect nor perfect in its functions. First, it's not as convenient as any other device with built-in Bluetooth. I bought this to connect to Bluetooth in my old non-Bluetooth car so I'll rate this based on that usage. If my car had bluetooth built in I could turn on the car and most likely it would automatically connect to my phone and I would be good to go. In this case I have to manually turn the receiver on each time, which takes a few seconds to hold the button and when the unit turns on it emits an annoying high-pitched beep indicating it's on. It's a little inconvenient and annoying on that front, but again it's a workaround so it won't be the ideal solution. I didn't experience any of the idle hum noise that other reviewers have claimed, except when the device is connected to a charger. Then he did it all the time. But in battery mode everything is fine. So overall it's not bad, it works, it does what I need it to, it's just not the most ideal thing in the world, again, it's a workaround. Sound quality is fine, as with any regular AUX jack, battery life is decent too, pretty much in line with the advertised rating, and yes, almost everything is fully functional.