Features: 1. Wide voltage design (12-24V wide voltage design, universal for cars and trucks, suitable for various standard on-board conversion plugs) 2. USB support (2 USB interfaces meet the needs more→of various electronic devices at the same time, suitable for mobile phones, IPAD, digital cameras, etc.) 3. Streamlined shape (with switch and waterproof cap, small and exquisite design, easy to install, and complement each other with your car) 4. Fast charging (smart power IC, stable current output without fluctuation; low resistance wire, strong current conduction, safe and stable) 5. Five intelligent protections (overcurrent protection, voltage stabilization protection, overcharge