I bought it a month ago and although it is expected for Christmas I tried on two charges is about 20/25 min total, in order to verify that it works correctly. Despite several falls it works great. Of course it will not abuse the "straight into the wall" and especially crashes on the ceiling suivits free falls to the ground! (When you have you will understand !!). Indeed, the controls are very sensitive and it takes a little time to do it. (Much like a remote vt, the jump there is the altitude to manage more ...) HOWEVER I DO NOT UNDERSTAND WHY THE PRODUCT HAS TOOK ALMOST 10E MORE AND BARELY 1 MONTH !! The price increases gradually as Christmas arrives !! (I paid 13.99 on October 31!)