The Sony MDR-V55 is a DJ-style set of headphones with reversible ear-cups that give the buyer access to high-quality sound. Weighing in at only 7 oz, without the cord, these Sony headphones are powered by neodymium magnets, which provide rich bass and a clear mid-range response, allowing the user to experience the music as it was meant to be heard. The Sony MDR-V55 is also equipped with a 40-mm closed-type driver unit that allows these headphones to deliver the perfect balance of rigidity and response, a must for balanced audio reproduction. The Sony MDR-V55 also has the ability to resist a high-power input of up to 1000 mW. These Sony headphones are also equipped with a ruggedized, flat, y-type cord that eliminates the chance of a tangled cord, which may plague other styles. The Sony headphones also feature a slim, swivel-folding design offering the buyer easy portability and listening flexibility.