WHAT'S UPGRADED: The 12V USB Outlet is replaced by a QC 3.0 Dual charger with touch ON/OFF switch, features energy-saving, and devices protection. QC 3.0 USB CAR CHARGER: Help charge two compatible devices simultaneously with a quick speed. Features LED voltmeter to show the voltage status of a car battery in time. You can also turn this off when not in use. UNIVERSAL COMPATIBILITY: Fit for 12V-24V Motor bike Car / Boat / ATV / UTV / / Caravans / Travel Trailer etc. ALL-AROUND PROTECTION: High-Grade Flame Retardant and environment Friendly IP65 Waterproof materials for long time use. Voltmeter Color: Blue 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 1/8 inches Max Output: 36W(18W each) Colour: Black Material: ABS Package Contents: 1 x USB Car Charger Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.