Chengzhong Sun LED Time Clock Large-Display Digital progressively Louder Multi-fonction Battery Operated Home Travel alarm clock Month, Date, and Temperature Display 1.Size :13.5*8*4.5cm 2. Real Bigger LCD Screen,Energy Saving,Bold Typeface,Clear and Comfortable Visual Sense Technalogy,Make Sure You Can See Exactly the Time Without Troubling Sleep. 3.Smart Light,Built in Light Sensor,LCD Back light Turns on Automaticaly When the Room or Circumstance Becomes Dark.and Dont Worry,This Also Wont Disturb the Sleepness 4.Alarm Sound Stronger Gradually,Sorftly Wake You Up From Dreams,Special Designed Snooze Function,When You Turn Down The Alarm,It Will Ring Again 5 Minutes Later. 5.Power Source:3 AAA Battery(Not included).Notice:No Radio Function