?5V/4.2A Dual USB Car Charger? Dual USB charging ports with single output of 2.1 A enables you simultaneously chargers 2 devices at high speed.
?Wide Application? Universally fits for DC 12V-24V vehicles, boats and marine, motorcycle, truck, SUV, UTV, etc.
?10A Fuse Protection?Built in 10A fuse protects your devices from over-heat, over-current, over-voltage, overload, under-voltage and short-circuit.
?Easy Installation?Diameter of hole is 3cm. It fits most vehicles dash panel and rocker switch panel. "+" to positive pole, "-" to negative pole. A tight fitting cap protects the USB ports when not in use. Also, it can be wired on an on/off switch, then you can turn if off to save energy.
?Waterproof and Heat Resistant?With a waterproof cover and does good job on high temperature and low temperature environments ( - 20°C to 60°C).