Chip Version: V5.1 Support Protocols: A2DP, AVRCP, HFP, HSP Frequency Range: 87.5~108.0MHz FM Transmission Distance: About 5M Voltage Input: DC12-24V Current Output: USB Output Current: 3.1A Type-C Output Current: 5V/3A, 9V/3A,12V/2.4 A (PD 30W) USB-C Support Protocol:PD/BC1.2,Apple,Samsung/QC2.0,QC3.0/MTK-PE/FCP/AFC Music Format: MP3, WMA, WAV,APE,FLAC U Disk/TF Card (maximum Capacity): 32GB Product Weight: 37g Low Voltage Reminder: Flashing Reminder Below 12V