RC Helicopter Walkera HM 53#1, 2.4 GHz53-1 is the largest co-axial RC helicopter on the market. It has the most powerful motors in its class. 53-1 Metal 2.4G Edition is equipped with 2.4G radio technology and metal upgrades as well. Co-Axial Mechanism - Stable Flight! Easy to Control!Ready To Fly - Everything Pre-Installed.Real 4 channels Proportional Radio System It is small but it can do everything a real rc helicopter can. You can control it moving up and down, forward and backward, left and right and rotation.2.4GHz New Generation Radio System 2.4GHz is the standard of new generation radio system. It offers longer transmission distance, less interference, more stable radio transmission and less legal issue. For traditional radio frequency, helicopters in same frequency cannot fly together because of interference. With 2.4GHz radio system, many helicopters can fly at the same time without interference.
Functions:Pitch-axis Roll-axisCollective pitchMotor speedSpecification:Main Rotor Diameter (Upper): 450 mmMain Rotor Diameter (Lower): 450 mmOverall Length: 440 mmDrive System: 2X370 SHBattery: 7.4V 1250mAh Li-Po batteryAll-up Weight: 355g (Battery included)Transmitter: 4CH PPMGyro: Not usedReceiver: RX-406Servo: weight 8.5g / speed 0.11sec/60(4.8V) / torque 0.9kg/cm (4.8V) / dimension 22.5x11.5x24 mmIncludes:4-Ch 2.4G Remote controllerPre-assembled HelicopterBattery Charger7.4V 1200mAh Li-Po Battery