This 54W Bluetooth 5. 3 car adapter is a combined FM transmitter, charger, and hands free calling solution for everyday driving. It plugs into a standard vehicle power socket and supports use in most 12V to 24V cars. With four charging ports, including PD 36W and QC 3. 0 18W, it can charge multiple devices at the same time while also handling wireless audio and call functions. The Bluetooth connection lets you pair a phone for music, navigation prompts, and hands free calls, then route sound through an open FM frequency on your car radio. A front control knob provides convenient access to audio adjustments and bass enhancement, while the digital display helps with frequency matching. Five color LED backlighting adds visibility in low light conditions. The enclosure uses metal and plastic materials and comes in silver. Size details from the product information list a plug connector diameter of 24 mm and a depth of 57 mm. Built in safety features include protection against over current, over voltage, overheating, and short circuit conditions, making this adapter a practical option for commuting, travel, and shared vehicle use.