). Main Rotor Dia.: 630 mm2). Tail Rotor Dia.: 145 mm3). Overall Length: 600 mm4). All-up Weight: 570-620g (Battery included)5). Speed Controller: 30A6). Drive System:out brushless motor7). Battery: 11.1V 1200mAh Li-Po8).Receiver: RX-7019).Transmitter: WK-070110).Gyro: WK-G01111).Servo: weight 8.5g ; speed 0.11sec/60o(4.8V);torque 0.9kg/cm(4.8V); dimension 22.5X11.5X24mm12).Rudd Servo: weight 6.4g ;speed 0.09sec/60o(4.8V) ;torque 0.6kg/cm (4.8V); dimension: 21.5X11.8X21.7mmFeatures:1). CCPM mixing control system and collective pitch control systems make perfect 3D maneuvers such as rolls, inverted, and swoop flights.2). The metal rotor head, metal swashplate and metal tail servo are innovative, built with precision and provide outstanding stability. The autorotation landing system, made of high quality one-way bearings, minimizes damage to your helicopter during unplanned landing.3). A highly efficient bevel wheel design is used to improve the mesh between main gear and motor gear.4). 380 motor as the main power is powerful and makes the flight much stable.5). 7-ch transmitter PCM WK-0701 with adjustable PIT parameter, throttle curve, and servo exponential function.