Car Charger 4.2A Quick Charge Dual USB with Voltmeter & Wire In-line 10A Fuse 【LED VOLTAGE DISPLAY】This USB socket has a built-in LED digital display voltage monitor, monitors the health of your vehic more→le's battery and electrical system in real-time, and allows quick and easy usage in the dark or at night. 【INTELLIGENT CHARGING】Comes with dual 5V/2.1A charging ports, built-in smart charging IC, will auto detects your devices and simultaneously chargers 2 devices at optimal speed, better charging performance. 【BROAD COMPATIBILITY】This USB charger socket fits for DC 12-24V car, boat, marine, motorcycle, ATV, RV etc. Suitable for charging mobile phones, GPS, digital cameras, PDAs and other US…