Features:

(1). Co-axial, counter-rotating double blades system;
(2). Ready to fly out of box;
(3). The new 2.4G remote control system adopts Advanced Spread Spectrum technology and digital FSK (Frequency Shift Key) coding technology.Two digital servos equiped, thus providing rapid response, precise control and nimbler movement.
(4). With this system, several flyers can operate simultaneously within the same area with no interference, ensuring a safe and funny flying experience.

Specification:

(1). Main rotor diameter: Φ340mm
(2). Weight: about 226g±10
(3). Length:415mm
(4). Width:77mm
(5). Height:174mm
(6). Weight:approximately 226g(including battery)
(7). Power system: 180 motor x 2pcs
(8). Transmitter: Standard 4 CH 2.4G transmitter(including training switch and simulator port)
(9). Mix controller: 4 in 1 mix controller (Including gyro, mixer, ESC, receiver)
(10). 7.5g Digital Servos(1.0kg.cm,0.1s/60°)x 2pcs
(11). Battery: 7.4V 800mAh Li-polymer battery set

The standard outfit includes:

1 x Helicopter kit
1 x transmitter
1 x charger
4pcs x main blades
1 x chargeable battery for heli
8pcs x dry battery for transmitter 
1 x ESKY softdog
1 x Instructional Video CD