Size: 605582mm; Weight: 40g--Bluetooth: V5.0 JL--Input: DC12V-24V--Output: USB1: 5V0.5A, USB2: 18W (QC/FCP/AFC)--Type-C: 20W (PD/QC/FCP/AFC), Total output: 38W Max--Support Bluetooth, U disk, TF card playback--Working principle: The mobile phone connects to the transmitter through Bluetooth, and the transmitter connects to the car speaker through FM