Personally I can't trust a headphone company when I cant find technical information about them anywhere.
This is taken form Technical Details section from Amazon:
"The music you hear in your headphones should sound as good as it did when the artist recorded it. But normal headphones can't deliver the rich, full sound in today's digital audio tracks. The man who knows: Grammy Award-winning artist, producer and sonic perfectionist Dr. Dre. In search of a headphone that truly reveals what's in the mix, Dre joined forces with the audio experts at Monster. Together, they've built a headphone for the ultimate high definition listening experience - for sound so r"
And then MDR-W08L which sells for 2$
Product Features
- Open-air, dynamic headphones which fit comfortably in the ear
- 13.5mm diameter for small size and sound quality
- Nickel-plated mini-plug is L-shaped
- Slim headband to keep headphones snug
- 3.3-foot cord (1 meter) for ease of movement