1.mute: Mute, press this button to put the music or video of the media being played in the car into mute mode, which is convenient for the driver to make a phone call or talk with others; I wonder if the landlord has a Bluetooth phone? )

2.mode: Mode, press this button to switch the mode of the whole machine, depending on how many modes your machine has, hehe!

3.eq loud: the loudness of the equalizer; Enter the EQ menu. EQ is used to set the balance of audio, that is, super bass (treble) and no bass (bass) and the preferred functions.

4.st/md: music playback, music in ST or MD format, these two formats are similar to MP3 on the surface, but they are not the same in essence. They are not as popular as MP3. You can check it on Baidu Encyclopedia.

5. Navigation: Video: Press this button to enter the video mode. If there is no video file on your computer, it should prompt you, depending on how the designer of this computer designed it. One more thing to remind the landlord, many domestic computers navi are not videos, but navigation, which is the abbreviation of the English word Navigation. Originally, I wanted to say navigation, but when I saw a GPS below, I thought about another video function.

6.mbp: menu item, everyone is right about this!

7.aps: Take photos or take a rearview mirror. Of course, you have to install a rear-view camera.

8. Band: it is FM band in word, but it is radio when it enters from the whole machine. Of course, you can also FM inside, hehe.

9.gps: Navigation is very easy to understand. Press this button to navigate and enter the corresponding map to operate. I don't know what map the landlord has, but mine is an authentic map!

In addition, one company's machine and another company's machine have their own key definitions, with different characters but similar functions, so I won't explain them here! You can read the instruction manual and press it a few times to know which one is what!