Charge All Devices SimultaneouslyThis USB 12v socket has a longer design, which allows it to be equipped with smart chips in all 4 ports. The car USB port can charge quickly at the same time without affecting each other. The total power of the 12V USB charger is up to 78W; whether you have 1, 2, 3, or 4 devices, the power will be intelligently allocated without sacrificing charging speed. 30W MAX Output PD USB C port Power up to 30W. Can be quickly used for your iPad Pro, iPhone 15/14/13Mini/etc, Samsung Galaxy S22/S21 etc. Experience extraordinary 8x charging speed, going from 0% battery to 90% in just 35 minutes, ultimately saving you over 90 minutes of valuable time. LED VoltmeterVoltmeter display shows vehicle voltage in real time. Let you know the condition of your car at any time. (Note! The voltmeter cannot be turned off after power is supplied. Please draw power from the car fuse box Avoid drawing power from the car battery) Aluminum Alloy BodyThe aluminu