[/DIN plug] Power outlet is a /DIN plug to USB, not a lighter socket in the car. The input voltage should be DC 12V-24V, suitable for / / motorcycles in European style. [PD3.0 & QC3.0] 12v din adapter has a 30W(Max) PD3.0 USB C port and an 18W QC3.0 USB A. The USB C port can quick charge most quick-charge phones and tablets such as the for iPhone12 from 0 to 50 percent within 30 minutes. But not for a laptop; The 18W QC3.0 port quick charge for most quick-charge Android devices. [Digital Voltmeter] Since the 12-volt battery has an internal resistance, and it can only display the voltage accurately if the USB is not charging. Voltmeter display range 9V-30V. []The circuit has a longer service life since its aluminum alloy shell has a better heat dissipation performance; The rubber cover helps protect the USB ports against water and dust. colour: black + blue Material: aluminum alloy Package Contents: 1 x Motorcycle charger 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.