Description:This USB charger by Navilock enables you to operate and charge up to two USB devices in your car or truck through the cigarette lighter. It supports a voltage supply of total 2100 mA for both USB ports together. Thus it provides the total 2100 mA when connecting only one USB device. Hence the voltage will be divided on both USB ports when connecting two USB devices. The small size of the adapter enables you to leave it plugged permanently inside the cigarette lighter and still close the cover of some cars.Specification:• 2 x USB type A female • Input: DC 12 - 24 V • Output: DC 5 V / 2100 mA • Over current protection • Operating temperature: -40 °C ~ 65 °C • Storage temperature: -40 °C ~ 85 °CSystem requirements:Package content:• DC car adapter • User manual