Fully-assembled air rocket and all launch equipment needed!nPowered by air so no batteries necessary!nBounce recoverynPowered by AIR and hours of fun! No batteries are needed for the Sonic Boom which means it’s always ready to go. The Sonic Boom Air Rocket comes fully assembled and the launch base will take just a few minutes to set up! Standing almost a foot tall, pumped up and ready to go, the Sonic Boom can climb to 150 feet! The rocket’s foam nose cone creates a “bounce” for quick and easy recovery and it’s ready to launch again.