* Online retailers: USB FM transmitters can be purchased from a variety of online retailers, such as Amazon, Best Buy, and Walmart.
* Electronics stores: USB FM transmitters can be purchased from most electronics stores, such as Best Buy, Fry's Electronics, and Micro Center.
* Auto parts stores: USB FM transmitters can be purchased from some auto parts stores, such as AutoZone, O'Reilly Auto Parts, and Advance Auto Parts.
* Gas stations: Some gas stations also sell USB FM transmitters.
When purchasing a USB FM transmitter, it is important to consider the following factors:
* Compatibility: Make sure that the USB FM transmitter is compatible with your phone or other device.
* Power output: The power output of the USB FM transmitter will determine how strong the signal is.
* Features: Some USB FM transmitters come with additional features, such as caller ID, song information, and volume control.
By considering these factors, you can choose the best USB FM transmitter for your needs.