The POWERUP 4.0 pairs with your smartphone and allows you to pilot the paper airplane yourself, while the POWERUP 2.0 charges in 20 seconds and can power more than 30 seconds of flight! The POWERUP Paper Airplane Book, authored by Kyle Boyer and Shai Goitein, teaches you 10 paper airplanes that work brilliantly with the POWERUP modules and gives you tips to maximize the performance of your flights!