When the alarm on the Flying Alarm Clock sounds (and trust us, you'll hear it!), the propeller launches into the air and flies around the room. The sound cannot be stopped until you retrieve the propeller and return it to the base station.So, if it's difficult for you or someone you know to wake up in the morning, this flying alarm clock for you. Simple to set and effective in waking you up, the Flying Alarm Clock may be the most annoying alarm clock you'll ever own.