open, around-the-ear stereo headphones, specially-tuned, high efficiency drivers capable of delivering high sound pressure levels, ventilated magnet system minimizes air turbulence and distortion for greater transparency and sound quality

additional headset for RS160 receives sound from a Sennheiser RS 160 wireless headphone system,RF wireless transmitter range: up to 60 feet,uses Kleer uncompressed audio transmission for interference- free reception and high-fidelity sound

Sennheiser PC 230 - Headset ( semi-open )

Although Digital recordings are recorded numerically, using numbers to define Sound quality are becoming obsolete. It's more than specifications, it's how sound reproduction is engineered along with biological hearing principles. Sennheiser is all about those. Be impressed with the IE-60.-If you don't know by now, please learn. It's the Headphone that makes digital media sound really spectacular. Sennheiser IE-60 is an in-ear earphone that moves MP3 and iTunes sound from the common into the rare. -With dynamic Drivers and powerful neodymium magnets, the IE 60 ear-canal phones deliver not only high-fidelity sound but also, outstanding Bass response and noise-isolation. Created in a durable housing with tough cabling, the IE 60 is designed for robustness. Quality construction complete with... Less