1. Cigarette Lighter to DC 5.5mm x 2.1mm Coil Spring Cable: Suitable for small electronics and appliances that use a 5.5mm * 2.1mm barrel plug for a power cable. When you want to use your TV on the road with your RV or truck or when on a boat. It's great. 2. Built-in 3Amp Fuse: Built-in replaceable 3Amp fuse as overload protection. When the device or charger fails, it will automatically fuse and cut off the power supply to protect your car's electrical circuit and your device. 3. LED Indicator: Cigarette lighter socket with built-in LED power indicator, let you know whether it is working or not. And safe to use. 4. Retractable Spring Design: 12V DC car power cable, spiral design, charging saves space without any worry of kinks or knots. The rational length of the spring wire can make it easier for the co-pilot or driver to use. back. 5. The 12V cigarette plug to DC Barrel Jack adapter cables are not compatible with high-power products above 12V and the maximum charging power does not