Available only from Hammacher Schlemmer, these are the remote-controlled helicopters that wage an in-air war for ultimate aviation supremacy. Each helicopter is equipped with an infrared laser cannon that emits an invisible beam at its opponent when triggered via remote. A direct hit spins the adversary in mid-air and causes its LEDs to flash—three hits shoots down the opponent, which causes it to land gently. The helicopters contain built-in gyro systems and air pressure sensors that allow for easy flight control. Each remote has two speed settings, two shooting buttons, left/right trim controls, an auto take-off/auto land button, and a trigger for adjusting altitude. Helicopters charge via included USB cable. For indoor use only.  Requires eight AAA batteries. Ages 14 and up. Each helicopter 9 1/4" L.