I've heard mixed messages about them, some people say that they need batteries to use noise cancellation and others say that they need batteries just to listen to music.

My friend who thinks he's cool (but he's not) got the beats solos in red and idk if i should also get them. I don't want to seem like i'm copying that swag-less loser but I think the Solos are the best.

If the studios need batteries just for me to listen to music then i won't buy them and i'm not considering buying any other brand of headphones simply because these look Really cool. I might get the beats pros since i've heard they are better than both the studios and the solos when it comes to sound quality and durability but the studios are said to be undoubtedly the most comfortable.
Thanks, to anyone who helps me out.