1. With 2 wheels can protect your plane better 2. Further flight distance,about 30m 3. Using 3.7V 150MAH Li-Po battery ,offer you a long and powerful flight. 4. 4-Axis gyro quad-rotorcraft flight, strong stability,can easily implement various flight movements, stronger wind resistance, easier to control. 5. 2.4G technology adopted for anti-interference even more than one quadcopter is flying at the same time they will not interfere with each other. www.everjoytech.com