Review on Upgrade Your Ride With Criacr Bluetooth FM Transmitter: Dual USB Charging, Hands-Free Calling & MP3 Music Player by Melvin Goerge

At first glance, it looks like you get way to much, specially for the price, but i can say, it does live to the hype, mp3 by usb or sd-card both sound amazing for a fm transmitter, on bluetooth the other hand, you need a pretty decent device to have excellent audio quality, but thats no issue for me, i totally love playing my music, bass is powerful and you can bump up volume high enough and audio cracks are few af, or you might not have audio cracks, during calls, it works as it should, mic is really good, and even at high volumes, there is no eco on the other side from the speakers.Really good job, excellent.Ill buy another lm for my other car.