Lookatool&reg; 12V Dual Car Moto USB Cigarette Lighter Socket Digital Display Voltmeter Material: Plastic. Size:7.8*5*7.7*6CM. Universal fitment. Suitable for voltage: DC 12V-24v. The Input voltage: 12V. The output voltage:5v. The Output Current: 3.1A. with a waterproof cover when not in use, the cover is waterproof and dustproof. Waterproof Dual USB port, unique design for installation , USB waterproof cover. Applicable models: 12V motorcycles, cars, boats, etc. Easy and convenient to ues.