took it out of the box would not lift off the floor . sent it back 2 month later received another one . trying to take off flipped over prop hit the floor and striped the gear. well not sending it back . because last time costed close to $20.00. My advice to every one is to not buy from world tech toys. I sent and email to world tech toys to see if I could get parts from them so I could fix the helicopter . But got no response.