I put it in a Fiat 500 cabrio because when I reverse with the hood down, I don't know what's happening behind. Now parking is a piece of cake.

Good video, terrible sound, but easy installation.. It comes with an adapter for the lighter socket, but obviously you connect it to the brain and not to the lighter adapter, and you don't have any annoying cables.

However, the sound is terrible, the video is pretty good I would say. It also increases your peripheral vision, as it has a larger mirror. This way, you gain extra vision in the rear right and rear left points.

Two major problems:
1) Terrible lighting at night due to cars behind you. They ruin your vision and practically render the mirror useless if you have a car quite close behind you.
2) Unacceptable recording/storage of the videos it records. I have set it to record 3-minute videos. That means it stops recording every 3 minutes and automatically starts another one (this is called loop recording, I think). The only settings for loop recording are 1, 2, and 3 minutes, so I set it to the maximum, 3 minutes. HOWEVER! It does not save the videos correctly and keeps old ones in the memory for no reason. My girlfriend had a car accident and when we tried to see the recording (by the way, it only records the front and not the back), the video played once and then never appeared again!
Another time we tried to find the 3-minute video we just recorded, and it didn't show up at all. Dangerous, because if something happens and you don't have visual proof, you're screwed!

For Lenovo, I expected it to be more securely supported on the existing car mirror.
It has a poor design in the support and it shakes when driving, resulting in fatigue when looking for rear visibility.
I had to put pieces of plastic to clamp it between the car mirror and the back of the device.