Fangrui Product Details 1. Features: 2. High Efficiency Usb 5v 2.1a Output For Fast Charging. Apply To Usb Charging Mobile Phones Or Other Electronic Products 3. The Thermometer Monitors The Air Temperature Clearly Providing More Comfortable Atmosphere For You 4. Comes With Voltage Meter Tester For Real-time Detect The Battery Voltage For Your Vehicle 5. It Is Easy To Connect The Battery. Using The Cigarette Lighter Plug, Just Plug And Play 6. It Is Suitable For Most Of 12v-24v Vehicles, Such As Cars, Suvs, Trucks, Etc 7. Specification: 8. Features:_x005f_x000d_ 9. _x005f_x000d_ 10. High Efficiency Usb 5v 2.1a Output For Fast Charging. Apply To Usb Charging Mobile Phones Or Other Electronic Products. _x005f_x000d_ 11. The Thermometer Monitors The Air Temperature Clearly Providing More Comfortable Atmosphere For You. _x005f_x000d_ 12. Comes With Voltage Meter Tester For Real-time Detect The Battery Voltage For Your Vehicle. _x005f_x000d_ 13. It Is Easy To Connect The Battery. Using The Cigarette Lighter Plug, Just Plug And Play. _x005f_x000d_ 14. It Is Suitable For Most Of 12v-24v Vehicles, Such As Cars, Suvs, Trucks, Etc. _x005f_x000d_ 15. Specifications: _x005f_x000d_ 16. Material: Metal, Plastic _x005f_x000d_ 17. Shell Color: Black _x005f_x000d_ 18. Input Voltage:12-24v _x005f_x000d_ 19. Usb Output: 5v 2.1a _x005f_x000d_ 20. Connection: Cigarette Lighter Plug(just Plug And Play) _x005f_x000d_ 21. Temperature Measurement Range: -10 Degrees To +80 Degrees _x005f_x000d_ 22. Display Color: Red Thermometer Display With Green Voltmeter Display, _x005f_x000d_ 23. Red Thermometer Display With Blue Voltmeter Display(optional) _x005f_x000d_ 24. Diameter: 4.3cm/1.69''_x005f_x000d_ 25. Total Length: 8cm/3.14'' _x005f_x000d_ 26. Package Weight: Approx. 50g _x005f_x000d_ 27. Package Included:_x005f_x000d_ 28. 1 X 3 In 1 Usb Car Charger Adapter 29. Packagelist: