Specifications:

New design with double 3.1A USB output, PTTC over-current protection, display the
voltage, temperature and current alternately by each 10 seconds. Auto power off while
the input current or output current is greater than the safety current, please plug out
will working again.

Features:

Dual USB 3.1A output.
With temperature and current meter tester.
Easy to satisfy your need with dual USB socket.
Fixed support helps stabilize the USB car charger.
Multifunction product with 10A protection tube, perfect for travel use.
Apply to all USB charging mobile phones or other electronic products.
This easily installed 5V, 2.1A output port holds your smart phone, GPS, MP3.
Optimized for iPad, iPhone and iPod-fast loading at full speed.(2.1 amps for iPad, 1
amp for iPhone / iPod.)

Details:

Type: 4 in 1 Car Charger
Color: Black
LCD Digital Color: Blue
Output Interface: USB
Input Voltage: DC 12-24V (Error of plus or minus 0.2V)
Output Voltage: DC 5V (Error of plus or minus 0.1A)
Outout Current: 3.1A
Voltage Measuring Range: 5-25V
Current Measuring Range: 0.1A-3.1A
Compatible Brand: Universal
Compatible Model: Universal
Conversion Efficiency: 95%
Temperature Measurement Range: -20 degrees to +80 degrees (Error of plus or minus 1
degree)
Size: 42mm x 78mm x 20mm/1.65" x 3.07" x 0.79" (Approx.)

Packages:

1*Car Charger
1*Micro usb cable as a gift

• FAST DUAL USB CHARGING PORTS - Combined 3.1 amps; 15W; uses smart technology to ensure each device pulls the right amperage. Dual USB car charger is powered by the vehicle's cigarette lighter
• OVER-CHARGE PROTECTION - The mini USB car charger is auto power off when input/output is greater than safety current, protects against over-heat, over-current and over-charging
• LED DISPLAY - LED digital luminescence tubes; Display cycles between internal temperature (Fahrenheit), device's charging current, and the voltage of the vehicle's car battery. (Note: When using the device to charge, it display the charger's temperature instead of the internal temperature of your car. ) The LEDs are bright enough to read the display without being a distraction while driving
• SPECIFICATIONS - Input: DC 12V - 24V, Output: DC 5V/3.1A, 15 W, Conversion efficiency 95%, Measuring range: Voltage 5V-25V, Current 0 - 3.1A, Temperature -4 to 176 F
• STYLISH, Compact design(2.9*1.6*1 inchs 0.9oz), Easy to use, easy to carry

FAST DUAL USB CHARGING PORTS - Combined 3.1 amps; 15W; uses smart technology to ensure each device pulls the right amperage. Dual USB car charger is powered by the vehicle's cigarette lighterGeekPower Tech