Upgrade Version:Dual Port USB Car charger.Input: DC 12-24V; Output:DC 5V 4.2A;Switch Style Blue LED Light</br>With Blue Led Digital Voltmeter ??it can easily monitor the storage-battery voltage?? with reverse connection protection function?? line will not burn</br>Easy to use and install. Over-heated?? over-current?? over-charging protection?? charging can be automatically stop when device battery is full.</br>Compatible Device:iPhone 6 6S Plus iPad Pro ?? Air Mini Samsung Galaxy S6 Edge and More Mobile Phone.</br>Simple?? small and elegant design. Environmental ABS material.MICTUNING Dual ports Car Charger with voltmeter is the best choice for your mobile devices and car battery!</br></br>Product Description</br></br><b>MICTUNING Switch Style USB car charger with Digial Voltmeter is the best choice for charging your Mobile devices and battary voltage monitor!</b> <br> <br> Simple?? small and elegant design. Environmental ABS material<br> Dual USB