The stereo headphones feature an integrated lanyard for optimum comfort and Sennheisers exclusive, powerful sound technology. Package Details: Includes: • MXL51 Headphones • Foldable Carrying Case • Extension Cable Product Features: • Sennheiser Basswind System for powerful bass response • Neck worn lanyard with ergonomic design ensures optimum fit • Accessories: earpads, lanyard, extension cable and foldable carrying case Technical Specifications: Model #: MXL51 Manufacturer: Sennheiser Weight: 2 lbs. 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. MXL51 User Guide (n/a)