William Mark Rc Flying Shark Air Swimmers FEATURES: Fill up with helium and swim through the air Body made from high quality, durable nylon material that will stay inflated for weeks Moves like a real shark Steers in any direction Easy indoor fun Infra-red controller Flies up to 40 feet Climb, descend and tail fin control These do not fly in altitudes of around 4,000 feet and up Do not overfill the balloons, or they will burst Balloons can be used over and over again until they burst or the balloon itself wears out Instructions included INCLUDES: One R/C Flying Shark Air Swimmers REQUIRES: 4 AAA batteries Helium gas, available at party supply stores Type: Airplanes & Jets Color: Blue