FeiLun FT009 2.4G 4CH High Speed Racing Flipped RC Boat Electric Remote Control Speedboat Water Cooling Motor System 35KMH - Green New high speed RC boat, speed up to 30km per hour Easy-to-use functions: forward, backward, left, right. This racing boat can also right itself! 2.4G frequency technology can make it feature high capacity of resisting disturbance Safety features to protect the battery and the boat: protects from over-charge and over-discharge of the battery. High quality guarantees its stable performance . NOTE: (the key to pair controller with boat): Put charged boat into WATER; and quickly turn on controller, the controller will automatically pair frequency with boat until both green lights.