Features:
 
 Set Daily Time:
a) Press the 's' button 5 times until the clock icon on the screen flashes, press the 'H' and 'M' buttons to set the hour/minute, and press the 'S' button to confirm the setting.
b) In the clock state, press the 'H' and 'M' buttons simultaneously to switch for 12/24 hours.
LED Backlight Setting:
a) Press any key to operate, the backlight will be on.
b) When the alarm rings, the light will also flash to remind you to take the medicne.
It will ring when not pressing the button for one minute, then it will sound again every 20 seconds. When continue for one hour, press any button to turn off the sound, and the timer will retain the original ringing time.