Product Description Built with gyro, make the helicopter fly stable and easy to control, cost effective Product Function: Up/down, turn left/ right, forward/backward, 360 degree precision persioning, hover 21.5*3.8x8.3mm Motor: 07 main motor*2 04 tail motor*1 Battery: 3.7V 150mAh Li poly battery (Japan Seki protection board) Charging time: About 2-3 hours Flying time: About 6--7 minutes Controlling distance: About 10 meters Battery for controller: 6*AA"batteries(not included) Frequency: A/B/C channel can be selected Light: With LED flashing light Avaliable for Ipad, Iphone, Itouch Two speed:with Low/high speed,suitable both for novices and skilled players Certifications: all authenticate by B.V CE,EMC,ROHS ,REACH,EN71-1-2.2,EN60825,2006/66/EC,EN6215,Cadmium,Phthalate,ASTM936,CPSIA,UN38.3 Advantages: Circuit board has memory function, forwarding is directly, and back warding is directly. Can fly outside and adjust as per the wind. Transmitter are easy to control and intuitionist. 3.5CH with gyro function to fly more stable Huge helicopter for fun or for profession or fancier. Multiple LED flashing lights suitable for night flying. Newly designed electricity saving function Low voltage alarm indicator, About fine-tuning button 360 degree full and accurate rotary positioning Beneficiary: Rugged shape and integrated function make it cost effective. Good endurance to be crashed. Low cost and easy to sell or resell compared with other big RC helicopters. Few after sale service or repair for users. Parts and components can be provided if needed