2 alarms can be set and controlled independently, 4 modes can be selected: to Friday, to Saturday, to Sunday and only daily alarm, you don't have to worry about missing important time. There are 18 kinds of ringtones to choose from, you can choose your favorite ringtone to remind you. 5 brightness levels, you can freely adjust the brightness according to the environment and your needs. After 8 seconds of inactivity, the alarm clock enters power saving mode and the screen turns off automatically. Press the top button to wake up the alarm clock. You can also switch between always-on mode and power-saving mode freely. Please note: Always-on mode consumes more power. Try not to use this mode when it is not powered by USB. When the alarm sounds, press the touch button at the top to enter snooze mode. At this time, the alarm on the screen will continue to flash and the alarm will sound again in a few minutes. Press any button on the back of the clock to turn off snooze mode.