1. Best charging technology. 2. Simple fixing clips (replaceable). 3. 4-port USB passenger charger with 1 m extension cable 4. Exclusive technology that protects your devices from excessive charging, excessive voltage, overvoltage, and short circuit. 5. The Smart Circuit automatically detects your devices and offers the optimal charging rate. Brand: Ldnio Model: C502 Black color USB port: 4 Cable length: 1m Total power: 25.5W Input: DC 12-24V Output: DC 5V5.1A