Digital Message Board Clock Alarm Temperature Calendar Timer Blue Light

Features:
Fluorescent light message board, allows you to write messages, draw pictures.
Date, time, temperature switchable or slide show.
12H/ 24H format, Celsius(C )/ Fahrenheit(F) is optional.
3 groups of alarm and snooze function.
Birthday celebration.
Timing and count down function.
16 world famous songs to appreciate.
2000 to 2099 calendar.
Powered by 3 * AAA batteries (batteries are not included), or through DC 5V input.
Blue background light.
Note: Light will be on all the time if it is powered byDC 5V; otherwise it will be off after 10 seconds.（5V input IS NOT INCLUDED）