Universal USB Car Charger with Voltmeter - MNJ Motor 4.2A Dual Port Charger 12-24V Blue LED Digital Display for Car Boat Motorcycle

Real Time Monitoring Voltmeter Dual USB Car Charger Combined dual USB interfaces and LED digital display voltmeter into a combo, with built-in intelligent voltage monitor, MNJ Motor 2-in-1 voltmeter is able to show you an accurate voltage value at anytime while you're driving, helping you to easily notice the battery running condition. 2 USB Fast Charging - Wide Application Adopted high tech of 2.1A USB fast charging port, it's able to auto select the desired current to charge for your mobile devices, perfect for most brands of Smartphones (iPhone/Samsung/Sony/HTC/Huawei/LG/XIAOMI...), Tablets, GPS, MP3/MP4/PSP, digital camera and other USB-devices. Wide Operating Voltage Range It is specially designed to steadily work at the operating range of 12-24 volt, while its transient voltage is tested up to 38V, suitable for most SUV, ATV, UTV, Scooter, Snowmobile, Street Bike, Car, boat, Marine, camper, etc. Specification Rating Voltage: 12-24V USB Output: 5V / 4.2A Interface: dual USB ports Material: Copper + ABS Plastic Voltmeter Dimension: 2.1"x1.4"x1" Bracket Dimension: 2.4"x1.7" Operating Temperature: -40 to 70 ? Wide Application: cars, motorcycles, ATVs, SUVs, UTVs, Boats, etc Multi-purposes: supply power for cellphone, tablet, GPS and other USB-devices Package List: 1 x Dual USB Voltmeter 1 x Mounting Panel 2 x Wiring Connectors 2 x Screws