Features: 1.Upgraded V5.0 BT Version: This upgraded version FM transmitter adopts the advanced BT V5.0 chip, which is stronger than other common products and has a higher transmission, which can effectively avoid the problem of unstable connection. 2.7 Color LED Backlit Version: This BT 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. 3.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, 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 4.Hi-Fi Music and 3 Playing Modes: This upgraded BT car adapter supports playing music via BT, USB disk, TF card. It can bring you an amazing auditory experience with its clear and stereo sound. 5.Hands-Free Calling: Built-in microphone, this BT 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. Note: 1️⃣ Please change another stable channel if it has a lot of static because of frequency conflict. 2️⃣ Please keep the frequency of the FM transmitter and your car radio be the same. Specification: BT Version : 5.0 Material : ABS Working Voltage : 12V 24V Music Format : MP3 / WMA USB1+2 Output : 5V / 3.1A USB3 Output : Type-C Fast Charger Support U Disk Capacity : 1G-32G BT Effective Distance : 5-10M FM Transmission Frequency : 87.5MHz-108.0MHz Connection Method : BT/U disk/TF card Package Included 1pcs* BT 5.0 FM Transmitter