Product detailsBasic product information:1.Chip version: V5.02.Supported protocols: A2DP, AVRCP, HFP, HSP3.Frequency range: 87.5 ~ 108.0MHz4.One-key EQ subwoofer;5.LED breathing light circle6.FM transmission distance: about 5M7.Voltage input: DC12-24V8.Current output: USB output current: 1A+QC3.0+ PD18 W9.U disk / TF card (maximum capacity): 32GB11.Low voltage reminder: flashing reminder below 12V