Controller: Infra-red Remote Functions: climb, descend and tail fin control Range: Up to 40 feet Length (with tail): 57 inches Height (with fins): 36 inches Air Swimmers swim through the air with incredibly smooth and life-like motion. They require only 4 AAA batteries. These amazing fish provide hours of remote control indoor fun in even the smallest of rooms (not for outdoor use). They require only four AAA batteries and have complete up, down and 360 degree turning control. Simply fill your Air Swimmers with helium at any party store or you can buy a helium canister from your local store. The body is made from a high quality , durable nylon material that will stay inflated for weeks! You can fill it again and again. Remote control has never come to life so magically! Note: Battery not included!!!