Odyssey Flying Machines Skywriter Display customized messages (one word at a time) in lights - as the Space Messenger hovers in midair (you can control the height) IR controller has a keypad and LCD screen for easy word inputting Up to 20 words can be programmed (7 character limit for each) Switch words manually, or scroll through them all with "auto" function Sky Writer has an internal Li-Polymer battery, which charges through the controller