ARK 4007 X-400 CCPM EP Helicopter ARF
Specifications:

Length : 630 mm (25 inches)
Height : 225 mm (9 inches)
Main Rotor : 588 mm (23 inches)
Tail Rotor : 150 mm (6 inches)
Weight 320 grams (11.3 ounces)
Flying Weight: 580 - 650 grams
(20.5 - 23 ounces)
Gear Drive Ratio : 1:9.85:5
Requires : 6 channel heli-radio w/4 micro servos, gyro, brushless motor & ESC,
Lithium-Polymer battery pack