Utrasone HSD-700  Headset with Omni Microphone (Discontinued by Manufacturer) Safer listening, less fatigue--pressure to the ear drum is decreased by up to 40% (3-4dB) for the same perceived loudness, significantly reducing the risk of hearing damage S-Logic natural surround sound moves the sound out of the headphones and into the room around you for a spacious three dimensional sound ULE technology with MU Metal shielding reduces radiation by up to 98% compared to ordinary headphones Microphone is small and unnoticeable, offering excellent feedback rejection Individually adjustable to all head sizes