Thatll be another review somewhere far in the future. (Program for customizing the lighting effects to your preference) Some effects when used on the Goliathus just dont work well with it at all, whereas the Firefly can almost copy other Razer products perfect for a unison look (Keyboard, Mouse, Speakers, Hue, Etc. Gute Qualität, fühlt dich gut an am fuß The cords are retractable, which means they get sort of twisty, but that?s just a personal annoyance and easily adjusted. Im very unhappy with these shoes. Definitely worth the price and worth the purchase! Has Bluetooth and in-line modes. You can almost for get youre wearing them. I pulled it back up and silence. My main issue is with the heel.