Descrtion:OOTDTY1: This is a QC3.0 ligent fast with display, warning, it can display charging rate, there is a that can freely the of display and turn on/off the power.2: Pre the lightly to turn on the power, it can display the real-time ar the full-screen lights up for 2 seconds, and then pre the on once again to to the red power Both display modes can be freely switched by the on, Pre and hold the for two seconds to turn off the power of the device. Ar turning off the power, it means that the device has cut off the power input and then achieve the the effect of saving electricity.3: When the input exceeds 14.6V, the red light is on (warning function, it indicates that the input is too high)4: When the power is turned on and the USB charging is performed, the flowing of color screen indicates that it is in charging; it will reflect the speed of charging according to the flowing rate of color screen When the is fully charged, it will light up on the full screen. Two minutes later, It will display the real-time again The display can be switched to a separate red light by preing the lightly. Pre and hold the for two seconds to turn off the power of the device.5.Multi-purposes: supply power for cellphone, tablet PC, and other USB-devices,Wide Application: for cars, motorcycles, ATVs, SUVs, UTVs, Boats,Specifications:Product material: ABSProduct Color: Blackinput for DC 12V 24VUSB 1 Output : for DC 5V/3A;9V/2A;12V/1.5AUSB 2 Output : for DC 5V/3A;9V/2A;12V/1.5ASize: 50x36.8mmPower Cable lenght: 60cmNote:1.nsition: 1cm=10mm=0.39inch2.Please allow 0-1cm error due to manual measurement. pls e sure you do not mind before you bid.3.Due to the difference between different monitors, the ture may not reflect the actual color of the item. Thank you!Package Includes:1 for QC Car Dual USB with LED ON OFF1 Power Cable with 10A