Upgraded USB C Port: Total 54W USB C port, 36W Type C USB port & 18W QC3.0 USB port, 4 times faster than universal USB port. PD3.0 USB port perfects for Mobile Phone, Tablet, Game Console, Camera, GPS, Dash Cam, etc. Overload and Short Circuit Protection: Built in Smart sense IC Technology, can identify each port??s max charging speed, provides intelligent protection, such as over-load, over-heat, over-voltage, under-voltage and short-circuit protection. IP66 Waterproof and Dust-proof: Made of ABS material, heat-resistant and wear-resistant aluminum alloy, meets IP66 waterproof rating. And this 12V socket designed with dustproof cover, protects the USB ports and cigarette lighter socket from dust and water. ON/OFF Button Switch: ON/OFF power button switch designed to prevent much power outflow, push the 12 vlot outlet socket off when you get off the car can avoid the battery drained. LED Digital Voltage Display: Blue LED light will light up to display digital voltage between the P