Electric 4CH Avatar RTF RC Helicopter with Gyroscope Battery for helicopter: 7.4V (1100mAh) Li-poly (included) Battery for remote controller: 6x1.5V AA(not included) Charging time: 2.5 hours Flying time: 6-7 minutes Remote controlled range: 40 meters . It can fly up and down, go forward and backward, turn left and right, 360-degree exact positioning, fly left sideward and right sideward 2 It starts with low voltage double-layer protection, very safe! 3 With propeller anti-locking device. Full 3D flight 5. Advanced intelligentized balance system 6. Long distance wireless remote control 7. Latest numerical control batter saver mode High precision gyroscope, 360 degrees rotation, 360 degrees accurate positioning, suspending 9. With colorful light in the helicopter 10.The special patent tilting frame controlling structure makes it fly stably. 11.Built in Gyroscope