Short description: USB QC 3.0 and Type-C PD 3.0 ports: with the double USB port and a Type-C port for fast charging, you can charge 3 devices at the same time and provide better charging performance. When you charge your devices, your devices with QC3.0 ports will charge faster. 20 W Type-C port where you can charge the latest devices. With the anti-interference performance and CVC noise reduction technology, you can enjoy fantastic deep bass music by pressing the B button. The bass booster is located at the top of the transmitter, it allows you to enjoy the better sound quality. By pressing the B button, you can enjoy improved sound quality. Quick and easy pairing. The Bluetooth V5.3 technology provides a precisely secure connection between your phone or other Bluetooth devices and the Bluetooth FM transmitter adapter. Widely compatible between all devices that support Bluetooth and cars with 12-24V.