it is no difference than the cheap toy drones sold in market for 5-10 bucks, except it come with a camera.1st, the drone does not come with TF card at all.2nd, the drone does not stay in the air, it either flied to one direction or going up and down, I followed the instruction to calibrate the remote control and drone many many times, the problem still persisted.3rd, the battery only lasts 5-7 mins air time.4th, the control range is around 15-20 ft at maximum, once the drone is going out of this range, it is out of control;5th, dont use it outdoor, very weak wind can take it away, and got stuck in trees, or neighbor's roof.6th, the video recorded by the drone sucks, and the photo is blurry