Cigarette Lighter Sockets and 3 Independent Switches: The adapter has 3 cigarette lighter sockets with a total power of 80W; each cigarette lighter socket is equipped with an independent on/off switch to ensure safety and prevent accidental activation. Repeated plugging and unplugging, while saving energy and protecting devices. Enough to meet the charging needs of a GPS, dashcam, car humidifier, and car fan, as well as various portable devices. QC3.0/PD FAST CHARGING: QC 3.0+PD+ dual-port USB car charger allows you to charge up to 4 devices simultaneously. Built-in smart IC intelligently detects your devices to provide the fastest charging speed (Note: QC3.0/PD is a fast charging port). MAIN SWITCH AND LED VOLTMETER: The main switch effectively extends the life of the cigarette lighter charger adapter; the adapter plug with digital LED voltage display monitors the car battery output, providing real-time information on the car battery status and preventing problems while driving. REPLACEABLE SAFETY FUSE: The 12V/24V cigarette lighter splitter has a complete protection circuit and a unique chip, with a built-in replaceable safety fuse, which prevents overcurrent, overvoltage, overload, and other damage. Overheating, short circuits, and overloads of the power splitter and your devices. WIDE APPLICATION: The adapter comes with a 1m power cable and a cigarette lighter plug for easy charging for rear-seat passengers; it is suitable for most types of vehicles, including crossovers, RVs, SUVs, trucks, minivans, and CDVs. It is compatible with most USB-powered devices, such as laptops, cameras, AirPods, Samsung phones, Android phones, etc. Package includes: 1 x USB car charger for cigarette lighter, 1 x Velcro strap, 1 x spare fuse.