Especially fun is the fact that you can record a personal message. Also great for travel pranks :)
Easily locate your bag from the sea of look-alike luggage. Simply press the button on your remote and the locator on your bag will light up (6 flashing LEDs!) and your prerecorded message will play for 30 seconds continuously. You'll be able to hear it up to 45 feet away!
More info: Luggage Locator