I am selling this because I changed to a larger one. I dropped it while driving once because I forgot to lock it to the carrier, so there are scratches and some cracks on the outside. There are no cracks inside the main body. For those who know about wiring, I have modified it myself so that the brake light will illuminate when connected to the brake wiring. I have driven about 3 times (over 100 kilometers) in this condition, but it is a homemade product, so please understand that it is not perfect. Thank you.