The scroll wheel and small selection of buttons on the top of the radio are very neat and incredibly intuitive to use, so you'll be up and running in no time. (idealhome.co.uk)
In the new window, tap on the three - dotted button on the top right of the screen and click on battery saver. (phoneradar.com)
The only way to do this is using the tiny power button on the top of the unit, right next to the volume button. (lightgungalaxy.com)