The phone also has a single, large 911 button, making it easy to use.

With only a single button is was impossible to press the wrong one.

She flipped open her phone and pushed a single button.

Despite its radically different look, a single button still turns on the entire system.

The patient could turn the pages with a single button.

It was a single small black button set in a red plaque.

Press a single button or key to see the final result.

The director again reached for the telephone and pressed a single button.

All he had to do is push a single button!

We can blast a city from the earth by pressing a single button.