Fitian Portable Carrying Car Charger Power Supply Replacement Adapter for Microsoft Surface Book Tablet Special designed car charger compatible with Microsoft Surface Book Intel Core i5 i7 PC Tablet IC chip offers short circuit protection and overload protection. High stability and efficiency Input: DC 12V-24V, 1.2A; Output: 12V, 2.58A; Stable charging for surface book Small in size and lightweight, easy and convenient to carry Package: 1x surface book car charger