LED displays month, date, week, hour and minute 12/24H format LED displays surrounding temperature Alarm with music,7 different alarm songs and 2 different "didi" sound; snooze function Can set up birthday alarm, by then birthday song will be played automatically Countdown time function Blue LED Backlight,press the LIGHT button to open or close the blue backlight. It will be on untill 5 seconds. Powered by 3 AAA batteries (Not Included) Size:12.5cm*6.5cm/4.87"*2.53" Color: white Package included:1pcs