You can control the radio or the cruise control with the push of a single button on the alloy steering wheel. (continentaltoyota.com)
The character switching mechanic is relatively painless and requires the press of a single button in order to switch out the characters. (gearnuke.com)
It comes with a simple one - button control that allows the user to completely control their phone or music player with the touch of a single button. (geekwrapped.com)