[ALUMINUM DUAL QC3.0 USB PORTS] Up to 4 times more than conventional chargers, the dual USB charger socket has two 18W / 3A QC3.0 charging ports. Built-in Smart IC technology, the 2-port USB charging ports charge 2 devices simultaneously. The USB car charger is made of aluminum alloy with better heat dissipation, which has the advantage of being non-flammable and wear-resistant. [CIGARETTE LIGHTER SOCKET] Total power up to 120W (12V) / 250W (24V). Enough for daily use, suitable for compatible devices, such as dash cam, GPS, vacuum cleaner, air purifier, etc. [DIGITAL LED VOLTAGE DISPLAY] Monitors the health of your vehicle, boat, marine, motorcycle, etc. The blue light is perfect for night use. [INDEPENDENT ON/OFF SWITCH] With a rocker switch, the USB charger provides energy-saving and device protection functions, increasing the lifespan of devices. It saves electricity and does not consume power when it is turned off [Bluetooth APP Control] Smart Bluetooth connection, you can record