Halo games, turning on skulls will change certain aspects of the game. For example, Grunt Birthday Party makes alien heads explode with confetti. Hopefully that won't happen to you when you turn on a different kind of Halo skull - as in, a Halo-branded headset from audio manufacturer Skullcandy - but we make no promises.
343 Industries, Microsoft and Skullcandy announced this week that the companies have partnered together for a multi-year deal that will result in new Halo-themed gear, including headsets and speaker tags. The deal also encompasses ASTRO Gaming, a division of Skullcandy. Unfortunately, exactly what these products will look like, what they'll do, how much they'll cost and when they'll be available are as of yet unknown.
Considering Master Chief's penchant for stumbling across forbidden information, maybe we'll find out soon.