Describe: Intelligent circuit design supports short circuit, overcurrent and overvoltage protection. Support DC 12-24V voltage range, suitable for all kinds of cars Only compatible with voltages between 12V~24V, voltages outside this range may damage the charger. Compatible with most phones, tablets, power banks 2-hole USB interface 3.1A super current intelligent power distribution, LED charging indication function. Aluminum alloy metal ring, pure copper USB contacts, durable. Intelligent fuse mode, dual-chip high-speed charging. Built-in overcurrent, overvoltage, short circuit protection, turbulence support, Charge mode maintenance. Soft aperture, more comfortable to use Specification: Output: 5V/3A Output interface: USB Input: 12-24V/2.4A Power supply: car lighter slot Model: Dual USB Car Charger USB ports: 2 Type: Car USB Charger Material: ABS+PC Size: length 4CM* width 2.5CM Package Included: 1pc* Car USB Charger