The major appeal is certainty that the battery wont die during a given day of use, no matter how heavily I use it. These are the worst headphones Ive owned. Sometimes the left and right are at different volumes and randomly alternate which ones louder until I disconnect and reconnect. Immer mit meiner Brille. But the real fault of the headphones is there isnt any padding on the inside where the ear fits; just very hard plastic. This set was perfect, and looks great in the location we wanted to use the sets. Das ist zum gewissen Grad OK, störte mich aber besonders bergab und auf der Geraden. Were sorry and to show you that your business means something and that this is the exception, not the rule when it comes to our products please consider upgrading your product at no additional expense, etc. Boo Yaa. Because of this I have a lot of conference calls.