Check the listing for details. Car Bluetooth 5.0 MP3 Player FM Transmitter Radio 3.1A Fast Charger Adapter Lots. Condition: New. Listed at 17.99 USD. Car Bluetooth 5.0 MP3 Player FM Transmitter Radio 3.1A Fast Charger Adapter Lots Product Features ‍ Upgraded V5.0 Bluetooth Version: This upgraded version FM transmitter adopts the advanced Bluetooth V5.0 chip, which is stronger than other common products and has a higher transmission, which can effectively avoid the problem of unstable connection. ‍ 7 Color LED Backlit Version: This Bluetooth radio transmitter supports 7 colors of LED-backlit light; you can get a visually stunning display of colors. Also, it makes it easier to operate and drive safely when driving at night. ‍ Dual USB Charging Ports and Type-C Fast Charger: This car FM transmitter with two USB ports for charging devices, it has two USB charging ports, it can charge two devices at the same time and has overcharge protection. Smart Type-C USB charges compatible devices up to 4x speed of the conventional charging ‍ Hi-Fi Music and 3 Playing Modes: This upgraded Bluetooth car adapter supports playing music via Bluetooth, USB disk, TF card. It can bring you an amazing auditory experience with its clear and stereo sound. ‍ Hands-Free Calling: Built-in microphone, this Bluetooth FM transmitter enables you to answer, hang up, reject a call, or redial the last number with ease. You can use the multi-function button to control calls and music. Others Setting up an FM transmitter should be an easy process. Simply plug in the device to power it in the car. From there, connect the smart device via Bluetooth. The most challenging step of the setup process is finding a clear FM frequency. If you have some presets selected in your car's stereo, choose one and then move around to adjacent frequencies. Sometimes, empty frequencies separate commonly used ones. Make sure you choose the same FM frequency between the radio and the FM transmitter. Both need to be in sync. The numbers should match between the two. Product Specification Type Wireless Car FM Transmitter Kit Wireless BT version V5.0+EDR Sensitivity -42db+/3db 360 Input voltage 12-24V Voltage 5V Support U disk/TF card ≤64G Working current 45mA (max) Standby current 25mA (max) Frequency 2.402-2.480ghz Current output 5V 3.1A FM 87.5MHz-108.0MHZ Effective range 5m Weight 1.26oz (36g) Package Included 1x Bluetooth5.0 FM Transmitter 1x User Manual