About this item [Convenient Touch Switch]This car charger is Designed with a high-quality & easy to operate on/off touch switch for energy-saving and devices protection, controls 2 USB charging ports and LED voltmeter, never need to worry about draining battery power. Note: the red led light only shows up when connected to power and the switch is on. [100% Waterproof and Dustproof]Unlike other products on the market, this USB charger for panel mounting is designed with a fully sealed protective cap, which is 100% waterproof and dustproof. IP66 waterproof, works great on ships, boats and motorcycles. [LED Voltage Display]This car charger builts in digital blue LED voltage monitor, displays the real-time voltage status of your vehicle battery, prevents problems caused by low voltage. The LED light also makes quick and easy to find USB ports in the dark or at night. [Faster Than Fast]Designed with official Qualcomm QC 3.0 USB port, whose max single output is 18W. B