Features Specifications:5G6 Electric R/C Helicopter(KEH5G6) Specification 1). Main rotor Dia. (Upper): 175mm 2). Main rotor Dia. (Lower): 175mm 3). Overall Length: 180mm 4). Drive System; 2 x 1215 strong-magnetic motor 5). Battery: 3.7V 400mAh Li-Po 6). All-up Weight: 53g (Battery included) 7). Transmitter: Wk-2401 8). Gyro: Built in 9). Receiver: RXX-2402 10).Servo: weight 3.5g;speed 0.11sec/60o(4.8V);torque 0.30kg/cm(4.8V);dimension 17.5 * 6.5 * 21.5 mm  Features 1). Coaxial structure and palm-sized dimension are used to make HM 5G6 as the optimal model for indoor entertainment. 2). 2 x 1215 strong-magnetic motor as power is powerful and makes flight stable. 3). Highly effcient servo (3g) is prompt in reaction and effectively guarantees the performance of various flights. 4). The receiving circuit is equipped with a built-in gyro, whose sensitivity can be customizedly adjusted. 5). The flight time at the 3.7V 400mAh Li-Po battery will be up to 7-10 minutes. 6). 2.4G RF makes WK-2401 with high precision strong in anti-interference and prompt in reaction.