ITEM NAME:Dual Port 3.1A SPB Car Cigarette Adapter Charger Lighter Digital LEDVoltmeterSP Functions Introduction: 1.When the charger is plugged into the car cigarette hole and energized, the LED display will show the car battery voltage.For example, 12 to 24V 2.The car charger is designed with dual USB charging ports, the left side is for for Android charging port, the "ADR" mark will be lit when charging, indicating that the product is charging, the maximum current for the left charging port can reach 1A. The right side is for IOS charging port. The "IOS" mark will be lit when charging, the maximum current can reach 2.1A. 3.When the car charger is working, the input voltage and charging current will be displayed in real time, which will be displayed once every 10s. 4.The maximum charging current is 3.1A, while the two charging ports work simultaneously, the total output current will be added by two USB ports. 5.When the car battery voltage is lower than 11.8V, the car charger screen will display the red mark "LOW" with DDD sound. 6.It can be adjusted up or down by 45 degree, convenient for viewing and using. Product Parameter: Output Power : 16W Input Voltage : 12~24V Output Voltage :DC5V Output Current : 3.1A Conversion Efficiencyï ¼Å¡85% Output Interface: Universal USB port Color: White+Black Material: ABS+PC Product Size:12.0*3.9*2.6cm Package Included: 1 x Car USB Charger 1 x User Manual Note: 1.Please allow 0.1-0.3cm differences due to manual measurement, thanks. 2.Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is 100% the same..The right side is for IOS charging port. The "IOS" mark will be lit when charging, the maximum current can reach 2.1A. Output Interface: Universal USB port. The maximum charging current is 3.1A, while the two charging ports work simultaneously, the total output current will be added by two USB ports.