Excellent, easy to install according to the instructions provided by the manufacturer inside the product's cardboard packaging. You can adjust all the buttons according to how it suits you for the specific use of your car's sound system. It requires a 12-volt battery to operate, of the alarm type, which is not included in the package. The buttons are also illuminated with the first contact you make for about 10 seconds, which makes it particularly useful at night or in low-light conditions. Finally, the adhesive it has for securing it to the inside of the steering wheel is particularly strong and has no problem falling off with the heat we have in our country.