RAP4 Raptor R/C Helicopter - paintball equipment This double propeller helicopter is a coaxial and reversing structure effectively offering a stable flight and easy operation. The high-volume 3.7V Li-Polymer battery is equipped with an overcharging protection function. The control transmitter uses 6 x AA batteries (not included) The control range is about 6 to 8 meters; or 18 to 24 feet