High Quality: High strength ABS plastic is hard, impact resistant and very durable. The case ensures charging safety against overload, overheating, overvoltage, overcurrent and short circuit. PU cover fits tightly when not in use and protects the USB port from water and dust.Travel Helper: It is a good helper for you on the go, when you suddenly encounter the problem of electronic devices without power, you can use this product to charge. High quality dual USB ports with DC 12-24 volt input and DC 5V 4.2A output provide fast charging.Safety Guard: Provide output over-current protection, output short-circuit protection, output voltage protection, constant current and voltage, over-temperature protection, positive and negative reverse connection protection. As long as there is an abnormality, it will automatically cut off the power to ensure the safety of your electricity.Easy to Install: It is very easy to install this product, just connect the positive and negative poles. The package is also equipped with two insulated terminals for you to make your installation more convenient and safe, no need to solder for installation and disconnection. You can install it wherever you need it.Widely Used: It is a universal product that mounts to your vehicle to provide assistance. Easily installs on your car, boat, marine, motorcycle, ATV, RV, camper, tractor, truck, golf cart and more.