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

This device is very easy to use. I plugged it into the cigarette lighter of my car and it turned on immediately and started searching for my phone. Once connected, it auto connects when the car is started, and while it’s plugged in. There is a hiss audible when nothing is playing and the volume is turned up very loud, but when media is playing the his can not be heard. Siri also sounds a bit muffled, but the media does not. The SD card is good for if I have a call on speaker on my phone, but want to listen to my music in the background as well. Even when the device volume, and your phone volume, it is typically quieter than normal FM radio.