E51 Road Treasure presents an in-car charger equipped with Bluetooth V5.0 FM transmitter, featuring dual USB outputs totaling 3.1A and an 18W Type-C output. Its BT specification is BT V5.0 JL. It supports USB flash drives up to 32GB and audio formats such as MP3, WMA, and WAV. The FM transmission distance reaches up to 5 meters. The USB-A output provides 5V / 2.1A per port, with a total output of 5V / 3.1A for dual ports. The Type-C output offers various power delivery options: 5V / 3A, 9V / 2A, 12V / 1.5A, with a maximum output of 18W. The dimensions of the device are 70*46*46mm, weighing 31g.