Hands-free calling: With this Bluetooth FM transmitter, you can safely make and receive calls while driving. It connects to your phone wirelessly, so you don't have to fumble with your device while behind the wheel.More compatibility: Featuring Bluetooth 5.0 technology. It is compatible with most devices on the marke that Bluetooth enabled devices such as table,Samsung, Android smart-phones etc also all 12-24V cars or trucks.Quick charging: This transmitter supports both QC3.0 and PD 22.5W quick charging, allowing you to rapidly charge your devices while on the go. Additionally, it supports charging multiple devices at the same time.Lossless audio quality: This Bluetooth transmitter supports lossless audio quality, so you can enjoy your music with high fidelity while you drive.USB disk support: With its USB port, this transmitter supports USB disks, so you can play music directly from your flash drive. This is a great option for those who want to listen to their own music collection while on the road.