Features:1.Dual USB 3.1A output, can charge two devices at the same time quickly.2.With voltage, temperature and current meter tester.3.Built-in protective function for over charge, over current, over voltage and over heat.4.Fixed support helps stabilize the USB car charger.5.Multifunction design with 10A protection tube, perfect for travel use.6.Compact and light weight, it is very portable to carry.Descriptions:1.LED display the voltage, temperature and current alternately by each 10 seconds.2.Apply to all USB charging mobile phones or other electronic products.3.This easily installed 5V, 3.1A output port holds your smart phone, GPS, MP3.Specifications:Output Interface: USBInput Voltage: DC 12-24VOutput Voltage: DC 5VOutput Current: 3.1AVoltage Measuring Range: 5-25VCurrent Measuring Range: 0.1A-3.1AConversion Efficiency: 95%Temperature Measurement Range: -20 degrees to +80 degreesMaterial: plasticSize: 42mm x 78mm x 20mmColor: black

Type:Centigrade,Fahrenheit(optional)

Package Included:1 x 4-in-1 Car Charger

Notes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow slight dimension difference due to different manual measurement.