Sennheiser CX300 has the look of a many common earbuds, but performs and feels much better. Sennheiser CX300 is designed to be the canalphone for people that don't like canalphones. Unlike most in-ear headphones, the CX300 remains mostly outside the inner ear. Most canalphones fit like earplugs, wedging themselves deep into the ear canal, scaring off many people due to the difficulty in fitting properly and feeling uncomfortable with the overall design. Improperly seated canalphones that fit deep in the ear can cause them to sound extremely poor often times producing a muffled sound. The CX300 uses large, soft rubber plugs that barely fit past the ear canal opening. Rather than placing the driver in the ear canal, the entire unit remains outside, piping sound through the sleeve. The CX300 headphones has three sizes of ear sleeves. The three foot cord uses the asymmetrical design, with the left ear piece having a shorter cord. This is convenient for determining which ear piece is the left and which is the right. These are some of the most durable and best sounding Earbud Headphones you will find anywhere! Package Details: Includes: • CX300 Headphones • Ear Adapters for perfect fit Product Features: • Powerful, bass-driven stereo sound • Perfect fit in the ear canal due to ear adapters in different sizes • Excellent attenuation of ambient noise • Extremely small and lightweight • Ideal for use with all MP3, CD, DVD, MD players and portable game systems with 3.5 mm headphone sockets • Asymmetrical cable • 2-year warranty Technical Specifications: Model #: CX300 Manufacturer: Sennheiser Shipping Weight: 1 lb. Available Documentation: In order to view our radio hardware manuals online, you will need to have the Adobe Acrobat Reader installed on your computer. If you do not have Acrobat Reader, please visit the Adobe web site to download the reader free of charge. CX300 User Guide