Nothing that a towel and some paper towels didn?t remedy! While it does have a fan inside, I found that when charging my phone still got about as hot as youll find on other wireless chargers. Good stereo wonderful bass and tremble. I love them and they keep my feet warm too so i dont need to have socks at all times during winter in Vancouver which is very humid. 5 más Bluetooth estéreo pero bien calibrados hace que queden atrás todos esos que emulan mal el 7. It helps to drown out the house noises which helps me focus. and not forgetting the best price I could find anywhere for these on the internet) It actually takes roughly 7 hours to fully charge, which is a long time when you forget to prep the night before. They dont stack up next to my other pair, but for the price, thats very good. However, there are no screws or nails that come with the pipes and no wooden shelf.