The rugged stereo neckband headphones fit comfortably behind the neck. The moisture-resistant construction makes these headphones the ideal sports companion. Package Details: Includes: • PMX70 Headphones Product Features: • Ergonomic neckband and vertical transducer system • Powerful neodymium magnets for detailed sound • Sweat and water-resistant • Extremely rugged earphones and cable Technical Specifications: Model #: PMX70 Manufacturer: Sennheiser Shipping 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. PMX70 User Guide(n/a)