HIGH QUALITY MATERIAL: Our car reversing alarm is made of ABS material, lightweight, sturdy and durable. It has good wear resistance and long service life. Easy to install: The speaker is very easy to install without spending too much time. It is very convenient and can effectively save your energy and time. Protection function: The car reversing horn has an automatic protection function, which can protect it when the wires are connected reversely or incorrectly. Wide application: The car reversing alarm is suitable for 12-24V vehicles, such as trucks, cars, excavators, heavy vehicles, trucks, etc. Note : The data is manual measurement, please allow 1-3cm error, due to differences between light and display, there will be a certain color difference, the specific received in kind shall prevail.< /p>