Hong Kong-based Helpdezk wants your headphones to look as cool as you do, which might explain their !Tude headphones. (They could also just want your money, though.) The headphones are electroluminescent, that is, they light up in one of several colors in response to music being played. The two AA batteries should power the headphone for 10 heart-stopping hours of fun, as you can see in this wonderfully directed video. Look closely and you can see the headphones light up, turn off, then light up again! Silly, yes, but could prove useful for our zero-second attention span youth.