I use them every day. Most go up to 900 Joule, this one has 1800. this was a nice looking skirt but if you are sweating, the sequin bangles will bleed ink all over you and may stain your skin. They are soft and comfy. One single caveat, that probably wont even apply to most people, especially if you use it every day, is that the rubber part of the dropper will literally disintegrate into an icky black rubber sludge over time. I purchased a refurbished unit at half the current price; even this price is quite competitive regarding other renowned brands. I thought the ear part would bother me but your ear settles into it so softly that it doesn’t bother you at all. We replaced our sons headband part of the solo beats 3- and it worked great and looks identAl to original. Have worn this brand for years because they have a terrific arch support that hold the foot. Has an interesting rubber loop that catches the inside ridge of the ear, making it ride inside and not fall out easily.