USB C + PD3.0- Output: 5V/3A, 9V/3A, 12V/2.5A, 15V/2A, 20V/1.5A (30W Max) ; PD3.0 USB C Car Charger Socket devices that support power delivery at up to 30W. Intelligently identify your device and deliver the fastest and most efficient power. Quick Charge 3.0- Provides 4x faster charging speed to compatible devices. Max output at 18W, able to charge compatible devices up to 80% in just 35 minutes, completely backwards compatible with all versions of Quick Charge. Fashion LED Voltmeter- Built-in LED Voltmeter can show the car battery status in the screen. LED luminous digit figure for checking the data at night or in darkness. NOTE: The digital LED display only works when you connect it with battery. ON/OFF Switch- The dual usb charger built-in ON/OFF switch, which can save energy and extend the life of the product and devices. It saves electricity and does not consume energy when it is turned off. Universal Compatibility- Widely applied to DC