Reliable Quality Warranty: Any questions or dissatisfactions with your purchase,24H x 7D technical and friendly customer service support, vansoet guarantee you refund within 180 Days, and 18-Month Product Replacement Warranty. Quiet Cooling Fan: Our car pulg adapter has a built-in intelligent cooling fan, which will automatically turn on when the internal temperature is too high. The intelligent cooling fan will automatically rotate at different speeds according to the power load and temperature, this design helps to reduce fan noise. Multi-Protection: Our car outlet adapter built-in fuse, safe charging technology can provide overheating, undervoltage/overvoltage charging, overload and short circuit protection, which can effectively protect your device and battery. PD 30W Fast Charging: Our car inverter has been newly upgraded with a 30W USB-C charging port that allows you to quickly charge your digital devices quickly. You'll get 30W of maximum power when you connect a single device. When you use both the USB-C and USB-A ports, power is efficiently distributed between the ports to ensure your devices get the optimal charge rate. vansoet Advantage: America's leading car power inverter brand. Provides 400 Watts continuous DC to AC power and 800 Watts instantaneous power, featuring 2 AC outlets and 1 PD 30W USB-C port and 1 USB-A QC 18W port, which can fast charge iphone, ipad, macbook and other devices on the trip, and it can also power the air compressor, breast pump, CPAP machine, nebulizer, car vacuum cleaner and other devices.