The MDR-EX90LP stereo headphones really make a statement. They say that you know something about style and that you're serious about music. With 13.5mm drivers and great-looking metal housings that reduce vibration, these headphones deliver crisp, quality sound from a tiny package. Perfect for work or play, th MDR-EX90LP system includes a handy, hard leather carrying case for easy storage when you're finished listening. 3 sizes of earbuds ensure a snug and comfortable fit for your listening pleasure.