QC3.0Wide voltage Input: 6V-32V, Output:DC 5V+QC3.0, output current: 3.4A; output power:24W(max). DurableThis DC to DC Converter With Overcurrent protection, Overvoltage protection, Over temperature protection, Short circuit protection. with stable and sturdy performance. Low lossThis 12v to 5v USB adapter integrates a switch thin voltage regulator module, and the conversion rate is up to 96%. Fast ChargingIt saves you time waiting for charging. Support QC 3.0/2.0, FCP, SFC, suitable for GPS navigation, driving recorder, car audio, MP3/ MP4, walkie talkie, surveillance system, bus display, taxi advertising screen, LCD TV, LED ect. NoteHow to achieve fast charging?For phones that support fast charging you must use the original charging cable or fast charging cable.If you have any problems, please feel free to contact us.