Widely Compatibility: USB C car chargher compatible with almost all popular car models and all Android/iOS and other devices like Samsung Galaxy S22, Note 10/10+, iPhone 13/12/12 Mini/12 Pro/12 Pro Max/11/Pro/Max, iPhone X/XS/XR/8s/SE, OnePlus, etc. Easy To Use: Step 1: Press the switch lightly, the voltmeter LED & USB port work well. Step 2: Press the switch lightly, the voltmeter LED power turn off. USB port work well. Step 3: Press and hold the switch for two seconds, the voltmeter & USB port power turn off. New Design: This car cigarette lighter charger equipped with colorful voltmeter which can monitor the voltage value of the car battery in real time, allowing you to know the battery level of the car at any time. Colored led lights can also help you easily find the car charger usb charging port in a dark environment. Safety & Fireproof: The fast car charger is made of high temperature and low temperature resistant materials, which can be used in -20-60(?)working environment. Built-in smart chip, escort your charging safety. Fast Charger: With dual QC3.0 USB ports supporting, the car charger fast charge two compatible devices simultaneously at QC3.0 speed, up to 4X faster than conventional charging. Dual port total output 36W, each port output 18W / 3A, which can rapidly charge for Phone from 0% to 80% within 30mins and fully charged other devie in 1 hour.