Universal 3.5mm AUX Bluetooth Adapter Car Kit Hands Free Phone Call Music Audio Receiver

Followed all the (poorly written & hard to understand) instructions, and never managed to get that unit to turn into pair mode. So I was only able to test the microSD card mp3 mode, and it played fine at least, with a descent sound quality too.Contacted the seller who offered me to get another brand one (not for free, but for an extra $0.12c, which wasn't too bad), which looks like the same as this one: https://www.amazon.com/gp/product/B07MSFS3P5 Will see how that works when I receive it. So 4 stars for the great & fast manufacturer support. One star less for the first product nor working as intended.