Review on 🚗 Sumind Car Bluetooth FM Transmitter: Dual USB Charger, Hands-free Calling, U-disk MP3 Player - Compatible with iPhone and Android Smartphones (Pattern 1) by Steve Rohde

Great device. Works fine with my iPhone 8. There are just a few minor issues. There are no instructions. After some experimentation, I realized that to change the radio frequency for the transmitter, you need to press and turn the knob at the same time. It loses sync at night so you have to reconnect every day. When you get out of the car and come back, it will automatically attach and start playing as soon as you're within range. So unless you get in the car and drive away, it plays by itself the whole time. (I listen to podcasts, so I often have to rewind them after starting my car). The range is pretty good so sometimes when I'm at home it connects to my phone and takes my calls. Didn't use a USB player. but so I'm not sure how it works. I only use it for podcasts. I can live with it because it's better than what I had before.