Now you can generate the fuel of the future and launch a rocket into orbit! The Estes hydrogen fuel technology uses water to generate the hydrogen fuel needed to blast a sleek rocket 200 feet into the sky. This set comes complete with a hydrogen fuel generating launch system, a four-point system check, a remote push-button ignition, propellant crystals, mixing bottle and two ready to fly rockets. Minor assembly acquired. Requires 6 D-size alkaline batteries - sold separately. Recommended for ages 10 and up with adult supervision for those under 12.