Alarm is a digital clock that you can set to display a message and play a sound at a time of your choice. It is meant to be of help when you want to be warned while you are working (and chances are big you are going to forget you have to do this very important thing later on)..

Alarm - Free Digital Clock Features
Shows the current time in configurable LED's
Beeps or plays a sound (you can replace the default alarm siren)
Plays music (you can use your own mp3, mid, wav and so on music files)
Shows a small dialog or alarms you with a Full Screen Alert with your text
Option to preview your alarm.