Mercedes e320 how to set the radio stations by the number1 thru 10?

To set radio stations on a Mercedes E320, first tune to the desired station using the radio controls. Once you've found the station you want to save, press and hold one of the number buttons (1-10) on the dashboard until you hear a confirmation beep or see a message indicating the station has been stored. Repeat this process for each station you wish to save. You can then easily access these stations by pressing the corresponding number button.