Quick Charge 3.0 Dual USB Charger Socket, Waterproof Aluminum Power Outlet Fast Charge with LED Voltmeter & Wire Fuse DIY Kit for 12V/24V Car Boat Marine Motorcycle ATV Bus Truck Golf Cart and More QC 3.0 Dual USB Fast Charger With dual QC 3.0 USB ports, the 36W 12 volt USB outlet charges two compatible devices simultaneously up to 4X faster than conventional charging, backward-compatible with QC 2.0 &1.0. For all USB devices like iPhone, iPad, Samsung, tablet, MP3, smart watch etc. Digital LED Display LED voltage display that can shows the voltage status of car battery in time. Always keeps your driving safe. Checks whether the connection is successful. Note: The voltage ONLY can be read after connecting to power and the car charger will not be chargered if the positive and negative poles are connected wrongly. Upgraded Metal Material 12V / 24V USB Car Charger equipped with advanced full aluminum alloy body for scratch resistance technology keeps it sturdy and let the 12v USB outlet always look like new. Splashproof & Dustproof With IP66 Splashproof grade against Sudden water splashes and dustproof by a rubber cover, protects internal circuit, effectively enhance its lifespan. Specifications Material: Aluminum alloy + PVC LED Voltmeter: Red light Input Voltage: DC 12V-24V Output Voltage: DC 3.6-6.5V/3A, 6.5V-9V/2A, 9V-12V/1.5A Product Dimension: 1.45 x 1.92 inches Portiforium Dimension: 1.13 inches Max Output: 36W(18W each) Line Length:1.8 M /70.8 inches Package Included 1 * Dual USB 3.0 Car Charger Adapter 1 * 70.8 Inches Wire with fuses(one installed) ???Notes: 1. The voltage indicator ONLY works by connecting to the battery. 2. Since the iPhone series does not support fast charging, charging the iPhone is normal speed.