I bought several of these for my daughter's 12th birthday slumber party. They loaded right out of the box which was a big surprise and very welcome as the girls couldn't wait to try them out. They played with it for quite a while before needing to charge it again. Then again in the morning before they went home! They make great party favors! The remote control helps turn the device on and off, so you don't have to worry about catching it with your hands. There's a faint buzz when they turn on, but you don't even notice it because you're too busy playing with them!