SURFACE PRO CAR CHARGER: The UL listed surface car charger power supply is designed to match your Microsoft surface Pro 3; Microsoft surface Pro 4; Microsoft surface Pro 5; Microsoft surface Pro 6; Microsoft surface Pro 7; Microsoft surface Pro 8; Microsoft surface Pro X; Surface Laptop; Surface Book; Surface Pro (5th Gen); Microsoft Surface Pro (2017/2018); Surface Laptop 1/2; Surface Go WITH USB QUICK CHARGE: USB 5V 2A car charger recharges the battery and another device such as your phone or iPad at the same time INPUT: DC 12-24V; OUTPUT: DC 15V/4A (For Surface), DC 5V 2A (USB) DESIGN: 70W surface power supply, come with 4.8 Ft Power Cord SERVICE: Contact us for return in 30 days while you are not satisfied with our product, and an new product as replacement in 1 year. Exactly worry-free for you