?Please Be Aware?If you experience any issues with the product after installation, please check the following: 1. Is the switch on? 2. Are the positive and negative poles correctly connected? 3. Is the fuse in the wiring blown? 4. Is the power supply sufficient? If you have any questions or concerns about a defective product, please contact us and we will respond within 24 hours!. ?What You Get?Choose Qidoe and you'll get: 1 * Premium Dual QC3.0 USB car charger, 1 * 60cm cable with 10A in-line fuse; 60-Day money-back guarantee and 2 years free warranty (replacement or refund) plus lifetime technical support. If you have any issues, please contact us first and we'll be sure to provide a satisfactory solution. Wide Compatibility?The waterproof and dust-proof cover is removable and can be used in even the harshest environments. Work with all 12V-24V vehicles, such as marine, ATV, motorcycle, car, truck, golf cart, RV, boat, SUV, and more. ON/OFF Switch? On the basis of the traditional best-selling metal models, it has been upgraded, adding a well-designed non-slip button switch, more stable on control than touch button. The switch can control the LED digital display to avoid the battery drained due to the constant light after the engine starts, and effectively enhance its lifespan. Blue Digital Display?The digital voltmeter monitors the battery and electrical system automatically and indicating the car voltage in the screen, and convenient for you to know the health of battery while driving. The voltage can still be seen after the dust-proof sealing cover is closed. Efficient Quick Charging?Dual ports pump out 36W total. Power Two Devices at Full Speed with QC 3.0 Charging Technology, Up to 4x Faster than Conventional Charging, and Deliver the Fastest Possible Charge to All non-quick Charge Device. Suitable for charging iPhones, Samsung, iPad, tablets, power banks, video game controllers, sports watches, etc. All Metal Material Body? Qidoe 12V USB outlet is made of aluminum metal, boasting a beautiful, sturdy, and impact-resistant shell. Upgrade metal USB sockets will not overheat at high temperatures, which is safer than plastic ones.