They charged at a fast pace, and each device you have on the charger, shows a green indicator light letting you know you are connected and charging for each separate device. Ive had other sets before and while the Bose noise cancellation is better, it isnt worth the extra price. Let me start with comfortable ear cushions, ears dont hurt, although I havent tested them in a long run: like for several hours. Finally, there is no support for microphones over 3. Investigating the mechanism that controls the deployment of the legs, they seem to be controlled by compression. especially if you have a bust. I wish that it can with more adhesive pieces. The con is zero arch support but throw in good old Dr Scholls and youll feel much more comfortable walking and dancing all night. My father has a pair of their M40x or 50x, but I am pretty much not allowed to touch them. Since these are very soft and wedges, Use caution when walking on anything soft (grass/rubber surface) or an uneven surface.