Multifunctional Car Fast Charging Charger

Product information:
Material: ABS
Frequency response: 20Hz to 15kHz
FM transmission frequency: 87.5~108.0MHz
Bluetooth version: Bluetooth 5.0
Transmission Distance: 5~10m
Operating voltage: 12V-24V
USB output: 5v 3.1A
Music format: MP3/WAV
Size: 4.3 × 4.3 × 8.2cm