what makes Adopted 2.4G gyro copters strong? [where to buy]

WLtoys V913 Flybarless 2.4GHz 4CH RC Helicopter MEMS Gyro 3D Rotation Airflow Sky Leader Copter with LCD Transmitter

Related drones with camera for video shooting and taking pictures at any angle

Main Features:

 2.4G technology Built-in gyro makes more copters flying together not to interfere each other and offers stronger wind resistance with easy control

Also read SkySpecs is the real copilot for drone Operators

Charging time: About 60mins

Playing time: 8 mins

Controlling distance: About 150m

Copter battery: 7.4V 1500mAh

You can read more and see where to get it here