Made of material and electronic components, durable and safety use.It is suitable for the installation and use of large-scale automobile such as van, cars, ships, truck, buses, etc. USB is car charger Provides charging and durability. Features - Color: Black. - Material: Plastic and metal - Size: 7x4x2.5cm -Input voltage 5 (V) - Output voltage 12-24 (V) - Output current 6200 (mA) - Operating temperature 45 () - Output interface USB -Made by brass andelectronic component material, durable and provide long service life. -Overvoltage protection, anti-surge protection, overcurrent protection, over temperature protection, anti-static protection, let you use it more safety and charge your digital device easily. - Let you use your electronic device more freely. - The product is equipped with a voltmeter, which can detect the use of the car battery at any time and prevent safety accidents caused by poor battery. - Suitable for most cars.