Snooze functionWhile the alarm clock is ringing, press "SNOOZE/LIGHT" at the top to pause the alarm clock. The alarm clock will ring every 5 minutes. Wake up at your preferred time. To cancel Snooze mode, just press any button on the back of the alarm clock. 2 AlarmsThe digital alarm clock has 2 alarms to set. With 40 harmonious melodies for ringtone. 3 volume levels. You can choose what you prefer to wake up energized every morning. Sound ControlIn sound control mode, the display will wake up when noise reaches 90 decibels or lightly knocks on the table.5 Brightness levels adjustment to reduce the risk to the eyes. Time/Temperature/Humidity show simultaneously on the LED display. Multifunction12/24 Hours modes to select. Weekend adjustable mode, press "WEEKEND" button to set Monday-Friday alarm or daily alarm clock, better enjoy weekend mornings. USB charging USB powered. Refillable and economical. Double USB interfaces, when charging the alarm clock, you can also charge your phone through the USB port of the alarm clock, very convenient. USB cable included.