Description: Features: Real-Time LED Voltmeter - This switch panels for trucks with large digital voltmeter display that shows 6V-30V voltage, you can monitor the condition of the battery on your car more→or boat that if the voltage is under normal status. This 12V USB socket is built-in dual charging ports, two QC3.0 ports output: DC 5V/3A;9V/2A;12V/1.5A,suitable for cellphone tablet gps and more deivces,Multi functional product, perfect for travel use,With ON/OFF Switch and power cable,Easy to use and save energy.. Waterproof dust proof material can be used for the interior and exterior application,Install in any 12V-24V motorbike, Boat, Riding mower, tractor or car. Multifunctional