Material: This USB charging socket is made of PP material, it is flame retardant, resistant to high and low temperatures and charges faster. Dual USB Charger: The voltmeter saves more space, is easier to use and more functional. Portable: It comes with a dual USB cover and the voltmeter cover and the temperature monitoring interface with a waterproof and dustproof cover, fully competent for outdoor use. Digital Display: The digital voltage display helps monitor the electrical status of the vehicle. Package Includes: 1 x Motorcycle Charger.