COLORFUL VOLTAGE DISPLAY ?C Upgraded version launched in July 2020, this 12V usb outlet with colorful voltmeter, technological appearance, displays the real-time voltage status of your vehicle, let you know the health of battery while driving.ON/OFF SWITCH ?C Features a on/off switch which controls the voltmeter and usb ports, save power and prevent the battery being drained when leave unused.QC3.0 DUAL USB ?C dual USB charger socket has two 18W / 3A QC3.0 fast charging ports, which is 4x faster than conventional chargers. Backwards compatible with Quick Charge 2.0 & 1.0, suitable for all popular USB devices.WIDE APPLICATION – Fits for 12V car, boat, marine, motorcycle, ATV, RV etc. This usb socket is suitable for charging iPhone 8/ 8 Plus/ X/ 7/ 6S, Samsung Note 9/ Galaxy S9/ S9+/ S8/ S8+/ S7, iPad, android tablets, power banks, video games controllers, sports watch etc.SAFETY PROTECTION – Certified by CE & ROHS with Over-charging, Over-current, over-heating and Short Circuit Protection