This is a mean machine! !! I thought I would get into flying 3d helicopters so I purchased this align trex 450l from a a trex dealer and club member. Works perfect! ! However this thing scared the crap out of me. I only managed to hover and go forth and back. Way to much for me.. spent over 800 for everything. Must go. Way to much for me . only the blade has tiny scratch on them. Happy bidding! !