Features: 100% new and high quality Fine workmanship, quality assurance, and refining of the high-strength spring line. USES the advanced DC-DC switch IC, integrated design. Stable performance, smal more→l and light, cleverly designed, easy to carry, and fashionable appearance. With short circuit, open circuit protection, overload protection function, the comprehensive protection of your mobile phone. Suitable for any model, is applicable to any mobile phone. A single USB interface, when using current 3.4 A; Two interfaces to use at the same time, the shunt output. Specification Material: ABS. Input: 12-18 v Output:5 v - 3.4 A(1A - 2.4A) Product certification: CE / ROHS / FCC Size: 51.4 mm