1. Long press and hold the Alarm button for 2 seconds to turn on/off the Alarm. 
2. Short press the Alarm button to set the alarm time, the "Digital" icon will blink: 

• Press  Vol+/- button to set the Hour
• Press ALARM again to set MIN, adjust the time on Vol+/- button. 
• Press ALARM again to confirm, the set time is displayed or after 3 seconds of no action then default confirm and exit Alarm set.