Car USB Charger Voltmeter Thermometer The product is shipped based on the color or size of the main image of the product page. Description: This model with 3 functions in 1 unit, including car baterry USB charger function ,Voltmeter function and Thermometer function.It is very convenient for you to know the status of your car ,such as voltage and temperature with the display function. It is yourgood choice to have one on your car, help you to charge digital device and show the baterry real status of your car. Feature: 1. Fashion Design, nice appearance looks very smart 2. Convenient Usage, just need to charge it at the car cigarette lighter plug then it work 3. Pretty Useful, it helps car owner better to know the status of car baterry 4. Humanization Making, with 3 function in one unitSpecification: USB Output Voltage: DC 5.0-5.1V USB Output Current: 0-2.1A, built-in fuse Voltage measuring range: DC 8-40V, DC12V/24V Temperature measuring range: -10 ~ 80?br /> Power mode: cigarette socket Display color: Red / Blue/ White Display mode: volt and temp alternate display in 10 seconds Size: 75mm x 40mm Function 1: Car battery voltage monitoring: 12V 24V automotive Function 2: Universal USB charger, cell phones, digital cameras, tablet PC etc Function 3: In-car temperature measurement: -10 ~ 80?br /> Package Included: 1 X Car Charger Note: Please allow slight errors due to manual measurement. Please make sure you don't mind before bidding. Color may vary depending on your monitor, please understand. Note: Hello, please pay attention to your shipping address when purchasing products. If your delivery information (e.g. name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly