Greetings, We have voice control installation available. Buttons can be installed on Yaris 2018 to 2022. Requires a chip for the full option, essential. Requires cruise control if the customer wants it. Corolla 2014 to 2019. Price of the part without installation: 250 Chip: 150 Cruise control: 150 Voice control buttons + chip + cruise control costs 550 with installation. They come with a one-year warranty. If it malfunctions or doesn't work for you, we will replace it with a new one for free, and installation is free.