Rated operating voltage:12V~24V
limited working voltage:9-32V
USB1 output:5V/1A U-disk
USB2 output:QC3.0(3.6V-6.5V/3A?6.5V-9V/1.5A?9V-12V/1A)
Working temperature:<60 degree
Music format:MP3?WAV
Supports U disk?TF card capacity:1G-32G
Bluetooth version:Version 4.2+EDR
FM transmit power:87.5MHz-108 MHz
Call effective distance:0.5-2M
Bluetooth effective distance:Less than 10M
LCD pixel128*160(1.8 in)
Product dimensions: 8.5*5.5*18cm