[3 socket cigarette lighter] Designed for power-hungry devices. Increase your car lighter from 1 outlet to 3 outlets. Three 12v/24v cigarette lighter sockets (DC power sockets), with a total power of 100W, which can meet the needs of various portable appliances such as driving recorders, handheld vacuum cleaners, GPS, seat heaters, car humidifiers, and car fans. Note : Can not light cigarettes. > [Multifunction 4 USB ports] The 4 USB charging ports provide 2.4 3.6 (Max) intelligent power output, which automatically matches the current single-hole output. The USB charging port allows you to quickly and safely charge any USB-powered device from your iPhone, iPad, Samsung tablet, MP3 player, Switch, Kindle and other USB powered devices. [LED voltage display] The simple LED digital display shows the charging status, vehicle battery voltage, and intimate low voltage alarm. After the connection is successful, the indicator light will be on, and the voltage of your car battery will be monitored in real time. [Built-in smart IC] To prevent short circuit, over voltage and over current. The smart USB port automatically detects your devices and provides the best charging current and speed for any connected device. This prolongs the life of the device. Smart Design > The equipment has a main switch, and each socket has independent switch control, which reduces the trouble of frequent plugging and unplugging of equipment. The LED indicator light shows the use status, the exhaust port is designed, and the power is automatically restored. Protection circuits protect the product and your equipment from overheating, overcurrent, overvoltage and overloading.