Feature: High-Power: Suitable for a variety of equipment. Aluminum alloy shell: Metal bady to reduce electromagnetic signas.3.1A dual USB (Universal Serial Bus) interfaces: Two USB (Universal Serial Bus) interfaces, charge your electronic products at any time. Electronic smart chip: Smartly control current, fully protect mobile phone battery & circuit. Specification: Material Aluminum alloy + ABSInput voltage 12V-24 V Output Current 3.1 (m A) Color Black Operating temperature 0 ~ 40 Degree Package Included:1 X Car Cigarette Lighter