Review on ✨ LIHAN Bluetooth FM Transmitter: 7-Color LED Backlit Car Adapter with QC3.0 & USB-PD Ports Charger, Wireless Radio Audio Player, Handsfree Calling & Music Receiver, Compatible with Most Smartphones by Jared Tovar

I recently replaced an old FM transmitter with a much smaller one because the digital digits on my old model were not properly lit and I could no longer see the transmitter. I have only used the Bluetooth function on my mobile phone for Spotify streaming, so I cannot speak to other functions such as USB to flash drive or TF card slot, but I will say that these available functions are part of the decision to buy this one transmitters were. The ability to change the backlight color is good. I want it to turn off when I turn off the car, but my cigarette lighter plug gives constant power even when the car is off. A power button would be handy. The sound is great as long as you are in an area where a clear channel can be made, just like mine. So far I am very happy with this purchase.