The Beyerdynamic lightweight DT 2 and DT 3 headphones are available in different versions and can be used in mobile applications with a tour guide system (cable length 0.8 m) or permanent applications of conferencing and interpreting systems (cable length 1.6 m). The ergonomic headphones in a modern design feature a high comfort and rugged construction. The matte non-glare surface prevents disturbing light reflections. After each guided tour or meeting the headphones can easily be cleaned.