PD&QC Quick Charge:
Only when your device and charging cable support PD protocol, the USB-C port of this FM transmitter can fast charge PD. Only the double-marked Lightning USB port supports QC 3.0 fast charging, and your device and charging cable must also support QC 3.0, the other USB port only supports 1.5A USB disk driving.
About 3 play modes
This car stereo Bluetooth adapter supports Bluetooth, USB disk and TF card to play your music, but when you use them all at the same time, Bluetooth audio will be priority, then the last inserted USB flash driver or TF card
Bluetooth hands-free calls
Answer: Press the rotary knob once. On Hook: Press the roller once while online. Decline: Press and hold the rotary knob for about 2 seconds. Rededial: short press the roller twice to the last number
HiFi Music
3 audio playback modes, including Bluetooth v5.0, USB flash drive (128GB) and TF card, you can stream your favorite music on your car stereo just like in the hallway.
PD20W fast charging port
PD 3.0 and QC 3.0 fast charging port, supports Android and iPhone charging simultaneously, intelligently adjusts current, avoiding overcharging and overvoltage.
