HONBAY Morning Clock,Low Light Sensor Technology,Soft Light That Won't Disturb The Sleep,Progressively Louder Wake Alarm Wake You Up Softly Real Bigger LCD Screen,Energy Saving,Bold Typeface,Clear and Comfortable Visual Sense Technology. Smart Light,Built in Light Sensor,LCD Back light Turns on Automatically When the Room or Circumstance Becomes Dark. Alarm Sound Stronger Gradually,Softly Wake You Up From Dreams. When You Turn Down The Alarm,It Will Ring Again 5 Minutes Later. Adjustable Time and Date Format,Circumstance Temperature Monitoring Function,Make Yourself a Easy Life. Power Source:3 AAA Battery(Not included).Notice:No Radio Function