1. 6.8A QC3.0 super quick charger 2. Support 2 devices to charge at the same time 3. Red led voltage measurement 4.Two installation methods : Handlebar Mounting Accessories ; Rearview Mirror Screw Mounting Accessories 5.Widely used : cell phones , tablets , sports cameras , Mp3/Mp4 , car recorder , game consoles ,usb lights , camcorders etc. Wiring Instructions: Method 1: If your vehicle has a SAE socket ,and the polarity is consistent with our product , directly connect and use it Method 2 : If your vehicle has a SAE socket , but the polarity is opposite with our product ,please use the SAE reverse polarity adapter first , and then connect it. Method 3: When you want to directly connect the battery to use, just use the power extension cord provided by us. It comes with a waterproof USB+Type-C cover, which is fully competent for Outdoor Usage. This USB Charger Socket is made by ABS Environmental Protection Material, which is fire-retardant, high and low temperature and anti-. Including USB And Type-C charger and voltmeter, dual outputs can charge two devices simultaneously, digital voltage display helps to monitor vehicle's electrical safety. Power Input: DC 12V Weight: 142g Output interface: 5V3.4A/9V2.5A /12V2A Colour:black + blue light Material:plastic Package Contents: 1 x Motorcycle Phone Charger 1 set x mounting accessories Only the above package content, other products are not included. Note: Light reflection 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.